Merge branch 'predictions' into development

pb_migrations/1784007613_created_predictions.js

@@ -0,0 +1,95 @@
+/// <reference path="../pb_data/types.d.ts" />
+migrate((app) => {
+  const collection = new Collection({
+    "createRule": null,
+    "deleteRule": null,
+    "fields": [
+      {
+        "autogeneratePattern": "[a-z0-9]{15}",
+        "hidden": false,
+        "id": "text3208210256",
+        "max": 15,
+        "min": 15,
+        "name": "id",
+        "pattern": "^[a-z0-9]+$",
+        "presentable": false,
+        "primaryKey": true,
+        "required": true,
+        "system": true,
+        "type": "text"
+      },
+      {
+        "cascadeDelete": true,
+        "collectionId": "pbc_340646327",
+        "hidden": false,
+        "id": "relation3177167065",
+        "maxSelect": 1,
+        "minSelect": 0,
+        "name": "tournament",
+        "presentable": false,
+        "required": true,
+        "system": false,
+        "type": "relation"
+      },
+      {
+        "cascadeDelete": true,
+        "collectionId": "pbc_3072146508",
+        "hidden": false,
+        "id": "relation2551806565",
+        "maxSelect": 1,
+        "minSelect": 0,
+        "name": "player",
+        "presentable": false,
+        "required": true,
+        "system": false,
+        "type": "relation"
+      },
+      {
+        "hidden": false,
+        "id": "json2153001328",
+        "maxSize": 0,
+        "name": "picks",
+        "presentable": false,
+        "required": false,
+        "system": false,
+        "type": "json"
+      },
+      {
+        "hidden": false,
+        "id": "autodate2990389176",
+        "name": "created",
+        "onCreate": true,
+        "onUpdate": false,
+        "presentable": false,
+        "system": false,
+        "type": "autodate"
+      },
+      {
+        "hidden": false,
+        "id": "autodate3332085495",
+        "name": "updated",
+        "onCreate": true,
+        "onUpdate": true,
+        "presentable": false,
+        "system": false,
+        "type": "autodate"
+      }
+    ],
+    "id": "pbc_1784007613",
+    "indexes": [
+      "CREATE UNIQUE INDEX `idx_predictions_tournament_player` ON `predictions` (`tournament`, `player`)"
+    ],
+    "listRule": null,
+    "name": "predictions",
+    "system": false,
+    "type": "base",
+    "updateRule": null,
+    "viewRule": null
+  });
+
+  return app.save(collection);
+}, (app) => {
+  const collection = app.findCollectionByNameOrId("pbc_1784007613");
+
+  return app.delete(collection);
+})

src/app/routeTree.gen.ts

@@ -38,10 +38,13 @@ import { Route as AuthedAdminPreviewRouteImport } from './routes/_authed/admin/p
 import { Route as AuthedAdminBadgesRouteImport } from './routes/_authed/admin/badges'
 import { Route as AuthedAdminActivitiesRouteImport } from './routes/_authed/admin/activities'
 import { Route as AuthedAdminTournamentsIndexRouteImport } from './routes/_authed/admin/tournaments/index'
+import { Route as AuthedTournamentsIdPredictionsRouteImport } from './routes/_authed/tournaments/$id.predictions'
 import { Route as AuthedTournamentsIdGroupsRouteImport } from './routes/_authed/tournaments/$id.groups'
 import { Route as AuthedTournamentsIdBracketRouteImport } from './routes/_authed/tournaments/$id.bracket'
 import { Route as AuthedAdminTournamentsIdIndexRouteImport } from './routes/_authed/admin/tournaments/$id/index'
 import { Route as ApiFilesCollectionRecordIdFileRouteImport } from './routes/api/files/$collection/$recordId/$file'
+import { Route as AuthedTournamentsIdPredictionsMakeRouteImport } from './routes/_authed/tournaments/$id.predictions_.make'
+import { Route as AuthedTournamentsIdPredictionsPlayerIdRouteImport } from './routes/_authed/tournaments/$id.predictions_.$playerId'
 import { Route as AuthedAdminTournamentsRunIdRouteImport } from './routes/_authed/admin/tournaments/run.$id'
 import { Route as AuthedAdminTournamentsIdTeamsRouteImport } from './routes/_authed/admin/tournaments/$id/teams'
 import { Route as AuthedAdminTournamentsIdAssignPartnersRouteImport } from './routes/_authed/admin/tournaments/$id/assign-partners'
@@ -193,6 +196,12 @@ const AuthedAdminTournamentsIndexRoute =
     path: '/tournaments/',
     getParentRoute: () => AuthedAdminRoute,
   } as any)
+const AuthedTournamentsIdPredictionsRoute =
+  AuthedTournamentsIdPredictionsRouteImport.update({
+    id: '/tournaments/$id/predictions',
+    path: '/tournaments/$id/predictions',
+    getParentRoute: () => AuthedRoute,
+  } as any)
 const AuthedTournamentsIdGroupsRoute =
   AuthedTournamentsIdGroupsRouteImport.update({
     id: '/tournaments/$id/groups',
@@ -217,6 +226,18 @@ const ApiFilesCollectionRecordIdFileRoute =
     path: '/api/files/$collection/$recordId/$file',
     getParentRoute: () => rootRouteImport,
   } as any)
+const AuthedTournamentsIdPredictionsMakeRoute =
+  AuthedTournamentsIdPredictionsMakeRouteImport.update({
+    id: '/tournaments/$id/predictions_/make',
+    path: '/tournaments/$id/predictions/make',
+    getParentRoute: () => AuthedRoute,
+  } as any)
+const AuthedTournamentsIdPredictionsPlayerIdRoute =
+  AuthedTournamentsIdPredictionsPlayerIdRouteImport.update({
+    id: '/tournaments/$id/predictions_/$playerId',
+    path: '/tournaments/$id/predictions/$playerId',
+    getParentRoute: () => AuthedRoute,
+  } as any)
 const AuthedAdminTournamentsRunIdRoute =
   AuthedAdminTournamentsRunIdRouteImport.update({
     id: '/tournaments/run/$id',
@@ -266,10 +287,13 @@ export interface FileRoutesByFullPath {
   '/tournaments/': typeof AuthedTournamentsIndexRoute
   '/tournaments/$id/bracket': typeof AuthedTournamentsIdBracketRoute
   '/tournaments/$id/groups': typeof AuthedTournamentsIdGroupsRoute
+  '/tournaments/$id/predictions': typeof AuthedTournamentsIdPredictionsRoute
   '/admin/tournaments/': typeof AuthedAdminTournamentsIndexRoute
   '/admin/tournaments/$id/assign-partners': typeof AuthedAdminTournamentsIdAssignPartnersRoute
   '/admin/tournaments/$id/teams': typeof AuthedAdminTournamentsIdTeamsRoute
   '/admin/tournaments/run/$id': typeof AuthedAdminTournamentsRunIdRoute
+  '/tournaments/$id/predictions/$playerId': typeof AuthedTournamentsIdPredictionsPlayerIdRoute
+  '/tournaments/$id/predictions/make': typeof AuthedTournamentsIdPredictionsMakeRoute
   '/api/files/$collection/$recordId/$file': typeof ApiFilesCollectionRecordIdFileRoute
   '/admin/tournaments/$id/': typeof AuthedAdminTournamentsIdIndexRoute
 }
@@ -302,10 +326,13 @@ export interface FileRoutesByTo {
   '/tournaments': typeof AuthedTournamentsIndexRoute
   '/tournaments/$id/bracket': typeof AuthedTournamentsIdBracketRoute
   '/tournaments/$id/groups': typeof AuthedTournamentsIdGroupsRoute
+  '/tournaments/$id/predictions': typeof AuthedTournamentsIdPredictionsRoute
   '/admin/tournaments': typeof AuthedAdminTournamentsIndexRoute
   '/admin/tournaments/$id/assign-partners': typeof AuthedAdminTournamentsIdAssignPartnersRoute
   '/admin/tournaments/$id/teams': typeof AuthedAdminTournamentsIdTeamsRoute
   '/admin/tournaments/run/$id': typeof AuthedAdminTournamentsRunIdRoute
+  '/tournaments/$id/predictions/$playerId': typeof AuthedTournamentsIdPredictionsPlayerIdRoute
+  '/tournaments/$id/predictions/make': typeof AuthedTournamentsIdPredictionsMakeRoute
   '/api/files/$collection/$recordId/$file': typeof ApiFilesCollectionRecordIdFileRoute
   '/admin/tournaments/$id': typeof AuthedAdminTournamentsIdIndexRoute
 }
@@ -341,10 +368,13 @@ export interface FileRoutesById {
   '/_authed/tournaments/': typeof AuthedTournamentsIndexRoute
   '/_authed/tournaments/$id/bracket': typeof AuthedTournamentsIdBracketRoute
   '/_authed/tournaments/$id/groups': typeof AuthedTournamentsIdGroupsRoute
+  '/_authed/tournaments/$id/predictions': typeof AuthedTournamentsIdPredictionsRoute
   '/_authed/admin/tournaments/': typeof AuthedAdminTournamentsIndexRoute
   '/_authed/admin/tournaments/$id/assign-partners': typeof AuthedAdminTournamentsIdAssignPartnersRoute
   '/_authed/admin/tournaments/$id/teams': typeof AuthedAdminTournamentsIdTeamsRoute
   '/_authed/admin/tournaments/run/$id': typeof AuthedAdminTournamentsRunIdRoute
+  '/_authed/tournaments/$id/predictions_/$playerId': typeof AuthedTournamentsIdPredictionsPlayerIdRoute
+  '/_authed/tournaments/$id/predictions_/make': typeof AuthedTournamentsIdPredictionsMakeRoute
   '/api/files/$collection/$recordId/$file': typeof ApiFilesCollectionRecordIdFileRoute
   '/_authed/admin/tournaments/$id/': typeof AuthedAdminTournamentsIdIndexRoute
 }
@@ -380,10 +410,13 @@ export interface FileRouteTypes {
     | '/tournaments/'
     | '/tournaments/$id/bracket'
     | '/tournaments/$id/groups'
+    | '/tournaments/$id/predictions'
     | '/admin/tournaments/'
     | '/admin/tournaments/$id/assign-partners'
     | '/admin/tournaments/$id/teams'
     | '/admin/tournaments/run/$id'
+    | '/tournaments/$id/predictions/$playerId'
+    | '/tournaments/$id/predictions/make'
     | '/api/files/$collection/$recordId/$file'
     | '/admin/tournaments/$id/'
   fileRoutesByTo: FileRoutesByTo
@@ -416,10 +449,13 @@ export interface FileRouteTypes {
     | '/tournaments'
     | '/tournaments/$id/bracket'
     | '/tournaments/$id/groups'
+    | '/tournaments/$id/predictions'
     | '/admin/tournaments'
     | '/admin/tournaments/$id/assign-partners'
     | '/admin/tournaments/$id/teams'
     | '/admin/tournaments/run/$id'
+    | '/tournaments/$id/predictions/$playerId'
+    | '/tournaments/$id/predictions/make'
     | '/api/files/$collection/$recordId/$file'
     | '/admin/tournaments/$id'
   id:
@@ -454,10 +490,13 @@ export interface FileRouteTypes {
     | '/_authed/tournaments/'
     | '/_authed/tournaments/$id/bracket'
     | '/_authed/tournaments/$id/groups'
+    | '/_authed/tournaments/$id/predictions'
     | '/_authed/admin/tournaments/'
     | '/_authed/admin/tournaments/$id/assign-partners'
     | '/_authed/admin/tournaments/$id/teams'
     | '/_authed/admin/tournaments/run/$id'
+    | '/_authed/tournaments/$id/predictions_/$playerId'
+    | '/_authed/tournaments/$id/predictions_/make'
     | '/api/files/$collection/$recordId/$file'
     | '/_authed/admin/tournaments/$id/'
   fileRoutesById: FileRoutesById
@@ -686,6 +725,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof AuthedAdminTournamentsIndexRouteImport
       parentRoute: typeof AuthedAdminRoute
     }
+    '/_authed/tournaments/$id/predictions': {
+      id: '/_authed/tournaments/$id/predictions'
+      path: '/tournaments/$id/predictions'
+      fullPath: '/tournaments/$id/predictions'
+      preLoaderRoute: typeof AuthedTournamentsIdPredictionsRouteImport
+      parentRoute: typeof AuthedRoute
+    }
     '/_authed/tournaments/$id/groups': {
       id: '/_authed/tournaments/$id/groups'
       path: '/tournaments/$id/groups'
@@ -714,6 +760,20 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof ApiFilesCollectionRecordIdFileRouteImport
       parentRoute: typeof rootRouteImport
     }
+    '/_authed/tournaments/$id/predictions_/make': {
+      id: '/_authed/tournaments/$id/predictions_/make'
+      path: '/tournaments/$id/predictions/make'
+      fullPath: '/tournaments/$id/predictions/make'
+      preLoaderRoute: typeof AuthedTournamentsIdPredictionsMakeRouteImport
+      parentRoute: typeof AuthedRoute
+    }
+    '/_authed/tournaments/$id/predictions_/$playerId': {
+      id: '/_authed/tournaments/$id/predictions_/$playerId'
+      path: '/tournaments/$id/predictions/$playerId'
+      fullPath: '/tournaments/$id/predictions/$playerId'
+      preLoaderRoute: typeof AuthedTournamentsIdPredictionsPlayerIdRouteImport
+      parentRoute: typeof AuthedRoute
+    }
     '/_authed/admin/tournaments/run/$id': {
       id: '/_authed/admin/tournaments/run/$id'
       path: '/tournaments/run/$id'
@@ -779,6 +839,9 @@ interface AuthedRouteChildren {
   AuthedTournamentsIndexRoute: typeof AuthedTournamentsIndexRoute
   AuthedTournamentsIdBracketRoute: typeof AuthedTournamentsIdBracketRoute
   AuthedTournamentsIdGroupsRoute: typeof AuthedTournamentsIdGroupsRoute
+  AuthedTournamentsIdPredictionsRoute: typeof AuthedTournamentsIdPredictionsRoute
+  AuthedTournamentsIdPredictionsPlayerIdRoute: typeof AuthedTournamentsIdPredictionsPlayerIdRoute
+  AuthedTournamentsIdPredictionsMakeRoute: typeof AuthedTournamentsIdPredictionsMakeRoute
 }
 
 const AuthedRouteChildren: AuthedRouteChildren = {
@@ -793,6 +856,11 @@ const AuthedRouteChildren: AuthedRouteChildren = {
   AuthedTournamentsIndexRoute: AuthedTournamentsIndexRoute,
   AuthedTournamentsIdBracketRoute: AuthedTournamentsIdBracketRoute,
   AuthedTournamentsIdGroupsRoute: AuthedTournamentsIdGroupsRoute,
+  AuthedTournamentsIdPredictionsRoute: AuthedTournamentsIdPredictionsRoute,
+  AuthedTournamentsIdPredictionsPlayerIdRoute:
+    AuthedTournamentsIdPredictionsPlayerIdRoute,
+  AuthedTournamentsIdPredictionsMakeRoute:
+    AuthedTournamentsIdPredictionsMakeRoute,
 }
 
 const AuthedRouteWithChildren =

src/app/routes/_authed/tournaments/$id.bracket.tsx

@@ -4,11 +4,12 @@ import {
   useTournament,
 } from "@/features/tournaments/queries";
 import { ensureServerQueryData } from "@/lib/tanstack-query/utils/ensure";
-import { Box, Container, Flex, Skeleton, Stack } from "@mantine/core";
+import { Container } from "@mantine/core";
 import { useMemo } from "react";
 import { BracketData } from "@/features/bracket/types";
-import { Match } from "@/features/matches/types";
+import { groupMatchesIntoBracket } from "@/features/bracket/utils/group";
 import BracketView from "@/features/bracket/components/bracket-view";
+import { BracketPending } from "@/features/bracket/components/bracket-pending";
 
 export const Route = createFileRoute("/_authed/tournaments/$id/bracket")({
   beforeLoad: async ({ context, params }) => {
@@ -34,84 +35,14 @@ export const Route = createFileRoute("/_authed/tournaments/$id/bracket")({
   pendingComponent: BracketPending,
 });
 
-function BracketPending() {
-  const columns = [4, 2, 1];
-
-  return (
-    <Container size="md" px={0}>
-      <Box
-        p={0}
-        style={{
-          overflow: "hidden",
-          backgroundImage: `radial-gradient(circle, var(--mantine-color-default-border) 1px, transparent 1px)`,
-          backgroundSize: "16px 16px",
-          backgroundPosition: "0 0, 8px 8px",
-          minHeight: "70dvh",
-        }}
-      >
-        <Skeleton height={18} width={140} radius="sm" m={16} />
-        <Flex gap="xl" px={16} align="stretch">
-          {columns.map((count, columnIndex) => (
-            <Stack
-              key={`bracket-pending-round-${columnIndex}`}
-              gap="xl"
-              justify="space-around"
-              style={{ opacity: 1 - columnIndex * 0.25 }}
-            >
-              {Array.from({ length: count }).map((_, matchIndex) => (
-                <Skeleton
-                  key={`bracket-pending-match-${columnIndex}-${matchIndex}`}
-                  height={84}
-                  width={220}
-                  radius="md"
-                />
-              ))}
-            </Stack>
-          ))}
-        </Flex>
-      </Box>
-    </Container>
-  );
-}
-
 function RouteComponent() {
   const { id } = Route.useParams();
   const { data: tournament } = useTournament(id);
 
-  const bracket: BracketData = useMemo(() => {
+  const bracket: BracketData = useMemo(
-    if (!tournament.matches || tournament.matches.length === 0) {
+    () => groupMatchesIntoBracket(tournament.matches),
-      return { winners: [], losers: [] };
+    [tournament.matches]
-    }
+  );
-
-    const winnersMap = new Map<number, Match[]>();
-    const losersMap = new Map<number, Match[]>();
-
-    tournament.matches
-      .filter((match) => match.round !== -1)
-      .sort((a, b) => a.lid - b.lid)
-      .forEach((match) => {
-        if (!match.is_losers_bracket) {
-          if (!winnersMap.has(match.round)) {
-            winnersMap.set(match.round, []);
-          }
-          winnersMap.get(match.round)!.push(match);
-        } else {
-          if (!losersMap.has(match.round)) {
-            losersMap.set(match.round, []);
-          }
-          losersMap.get(match.round)!.push(match);
-        }
-      });
-
-    const winners = Array.from(winnersMap.entries())
-      .sort(([a], [b]) => a - b)
-      .map(([, matches]) => matches);
-
-    const losers = Array.from(losersMap.entries())
-      .sort(([a], [b]) => a - b)
-      .map(([, matches]) => matches);
-    return { winners, losers };
-  }, [tournament.matches]);
 
   return (
     <Container size="md" px={0}>

src/app/routes/_authed/tournaments/$id.predictions.tsx

@@ -0,0 +1,37 @@
+import { createFileRoute, redirect } from "@tanstack/react-router";
+import { tournamentQueries, useTournament } from "@/features/tournaments/queries";
+import { ensureServerQueryData } from "@/lib/tanstack-query/utils/ensure";
+import { Container } from "@mantine/core";
+import { PredictionLeaderboard } from "@/features/predictions/components/prediction-leaderboard";
+
+export const Route = createFileRoute("/_authed/tournaments/$id/predictions")({
+  beforeLoad: async ({ context, params }) => {
+    const { queryClient } = context;
+    const tournament = await ensureServerQueryData(
+      queryClient,
+      tournamentQueries.details(params.id)
+    );
+    if (!tournament) throw redirect({ to: "/tournaments" });
+    return {
+      tournament,
+    };
+  },
+  loader: () => ({
+    header: {
+      withBackButton: true,
+      title: "Predictions",
+    },
+  }),
+  component: RouteComponent,
+});
+
+function RouteComponent() {
+  const { id } = Route.useParams();
+  const { data: tournament } = useTournament(id);
+
+  return (
+    <Container size="md" px={0}>
+      <PredictionLeaderboard tournament={tournament} />
+    </Container>
+  );
+}

src/app/routes/_authed/tournaments/$id.predictions_.$playerId.tsx

@@ -0,0 +1,124 @@
+import { createFileRoute, redirect } from "@tanstack/react-router";
+import { useMemo } from "react";
+import { Box, Container, Group, Paper, Stack, Text } from "@mantine/core";
+import { tournamentQueries, useTournament } from "@/features/tournaments/queries";
+import { predictionQueries, usePlayerPrediction } from "@/features/predictions/queries";
+import { ensureServerQueryData } from "@/lib/tanstack-query/utils/ensure";
+import { BracketPending } from "@/features/bracket/components/bracket-pending";
+import { PredictionBracket } from "@/features/predictions/components/prediction-bracket";
+import { computePredictionScore } from "@/features/predictions/utils";
+import PlayerAvatar from "@/components/player-avatar";
+
+export const Route = createFileRoute(
+  "/_authed/tournaments/$id/predictions_/$playerId"
+)({
+  beforeLoad: async ({ context, params }) => {
+    const { queryClient } = context;
+    const tournament = await ensureServerQueryData(
+      queryClient,
+      tournamentQueries.details(params.id)
+    );
+    if (!tournament) throw redirect({ to: "/tournaments" });
+
+    const prediction = await ensureServerQueryData(
+      queryClient,
+      predictionQueries.player(params.id, params.playerId)
+    );
+    if (!prediction) {
+      throw redirect({
+        to: "/tournaments/$id/predictions",
+        params: { id: params.id },
+      });
+    }
+
+    return {
+      tournament,
+      prediction,
+    };
+  },
+  loader: ({ context }) => ({
+    fullWidth: true,
+    withPadding: false,
+    header: {
+      withBackButton: true,
+      title: `${context.prediction.player.first_name}'s Bracket`,
+    },
+  }),
+  component: RouteComponent,
+  pendingComponent: BracketPending,
+});
+
+function RouteComponent() {
+  const { id, playerId } = Route.useParams();
+  const { data: tournament } = useTournament(id);
+  const { data: prediction } = usePlayerPrediction(id, playerId);
+
+  const matches = tournament.matches || [];
+  const picks = prediction?.picks ?? {};
+
+  const score = useMemo(
+    () => computePredictionScore(matches, picks),
+    [matches, picks]
+  );
+
+  return (
+    <Container size="md" px={0}>
+      <Box pos="relative">
+        <PredictionBracket
+          matches={matches}
+          picks={picks}
+          mode="view"
+          perMatch={score.perMatch}
+        />
+
+        <Box
+          pos="absolute"
+          left={0}
+          right={0}
+          bottom={0}
+          p="md"
+          style={{ zIndex: 2, pointerEvents: "none" }}
+        >
+          <Paper
+            withBorder
+            shadow="md"
+            radius="lg"
+            p="sm"
+            style={{ pointerEvents: "auto" }}
+          >
+            <Group justify="space-between" align="center" wrap="nowrap">
+              <Group gap="sm" align="center" wrap="nowrap">
+                <PlayerAvatar
+                  name={`${prediction?.player.first_name} ${prediction?.player.last_name}`}
+                  size={32}
+                  disableFullscreen
+                />
+                <Text size="sm" fw={600} lineClamp={1}>
+                  {prediction?.player.first_name} {prediction?.player.last_name}
+                </Text>
+              </Group>
+              <Group gap="md" wrap="nowrap">
+                <Stack gap={0} ta="center">
+                  <Text size="xs" c="dimmed" fw={700}>
+                    PTS
+                  </Text>
+                  <Text size="sm" fw={700}>
+                    {score.points}
+                  </Text>
+                </Stack>
+                <Stack gap={0} ta="center">
+                  <Text size="xs" c="dimmed" fw={700}>
+                    PICKS
+                  </Text>
+                  <Text size="xs" c="dimmed">
+                    {score.correct}/{score.total}
+                  </Text>
+                </Stack>
+              </Group>
+            </Group>
+          </Paper>
+        </Box>
+      </Box>
+    </Container>
+  );
+}

src/app/routes/_authed/tournaments/$id.predictions_.make.tsx

@@ -0,0 +1,60 @@
+import { createFileRoute, redirect } from "@tanstack/react-router";
+import { tournamentQueries, useTournament } from "@/features/tournaments/queries";
+import { predictionQueries, useMyPrediction } from "@/features/predictions/queries";
+import { ensureServerQueryData } from "@/lib/tanstack-query/utils/ensure";
+import { Container } from "@mantine/core";
+import { BracketPending } from "@/features/bracket/components/bracket-pending";
+import { PredictionEditor } from "@/features/predictions/components/prediction-editor";
+
+export const Route = createFileRoute(
+  "/_authed/tournaments/$id/predictions_/make"
+)({
+  beforeLoad: async ({ context, params }) => {
+    const { queryClient } = context;
+    const tournament = await ensureServerQueryData(
+      queryClient,
+      tournamentQueries.details(params.id)
+    );
+    if (!tournament) throw redirect({ to: "/tournaments" });
+
+    const myPrediction = await ensureServerQueryData(
+      queryClient,
+      predictionQueries.mine(params.id)
+    );
+    if (!myPrediction.eligible || myPrediction.locked) {
+      throw redirect({
+        to: "/tournaments/$id/predictions",
+        params: { id: params.id },
+      });
+    }
+
+    return {
+      tournament,
+    };
+  },
+  loader: ({ context }) => ({
+    fullWidth: true,
+    withPadding: false,
+    header: {
+      withBackButton: true,
+      title: `${context.tournament.name}`,
+    },
+  }),
+  component: RouteComponent,
+  pendingComponent: BracketPending,
+});
+
+function RouteComponent() {
+  const { id } = Route.useParams();
+  const { data: tournament } = useTournament(id);
+  const { data: myPrediction } = useMyPrediction(id);
+
+  return (
+    <Container size="md" px={0}>
+      <PredictionEditor
+        tournament={tournament}
+        initialPicks={myPrediction.prediction?.picks ?? {}}
+      />
+    </Container>
+  );
+}

src/components/wizard-orb-icon.tsx

@@ -0,0 +1,58 @@
+import { forwardRef } from "react";
+import type { Icon, IconProps } from "@phosphor-icons/react";
+
+export const WizardOrbIcon = forwardRef<SVGSVGElement, IconProps>(
+  (
+    { size = 24, color = "currentColor", weight = "regular", mirrored, alt, style, ...rest },
+    ref
+  ) => {
+    const strokeWidth = weight === "bold" ? 20 : 16;
+
+    return (
+      <svg
+        ref={ref}
+        xmlns="http://www.w3.org/2000/svg"
+        viewBox="0 0 256 256"
+        width={size}
+        height={size}
+        fill="none"
+        style={{
+          transform: mirrored ? "scale(-1, 1)" : undefined,
+          ...style,
+        }}
+        {...(alt ? { role: "img", "aria-label": alt } : { "aria-hidden": true })}
+        {...rest}
+      >
+        <circle
+          cx="128"
+          cy="112"
+          r="66"
+          stroke={color}
+          strokeWidth={strokeWidth}
+          fill={weight === "duotone" ? color : "none"}
+          fillOpacity={weight === "duotone" ? 0.18 : undefined}
+        />
+        <path
+          d="M94 96 a 44 44 0 0 1 30 -26"
+          stroke={color}
+          strokeWidth={strokeWidth * 0.7}
+          strokeLinecap="round"
+          fill="none"
+        />
+        <path
+          d="M96 194 h64 l16 26 h-96 z"
+          stroke={color}
+          strokeWidth={strokeWidth}
+          strokeLinejoin="round"
+          fill="none"
+        />
+        <path
+          d="M208 26 l8 16 16 8 -16 8 -8 16 -8 -16 -16 -8 16 -8 z"
+          fill={color}
+        />
+      </svg>
+    );
+  }
+) as Icon;
+
+export default WizardOrbIcon;

src/features/bracket/components/bracket-pending.tsx

@@ -0,0 +1,41 @@
+import { Box, Container, Flex, Skeleton, Stack } from "@mantine/core";
+
+export function BracketPending() {
+  const columns = [4, 2, 1];
+
+  return (
+    <Container size="md" px={0}>
+      <Box
+        p={0}
+        style={{
+          overflow: "hidden",
+          backgroundImage: `radial-gradient(circle, var(--mantine-color-default-border) 1px, transparent 1px)`,
+          backgroundSize: "16px 16px",
+          backgroundPosition: "0 0, 8px 8px",
+          minHeight: "70dvh",
+        }}
+      >
+        <Skeleton height={18} width={140} radius="sm" m={16} />
+        <Flex gap="xl" px={16} align="stretch">
+          {columns.map((count, columnIndex) => (
+            <Stack
+              key={`bracket-pending-round-${columnIndex}`}
+              gap="xl"
+              justify="space-around"
+              style={{ opacity: 1 - columnIndex * 0.25 }}
+            >
+              {Array.from({ length: count }).map((_, matchIndex) => (
+                <Skeleton
+                  key={`bracket-pending-match-${columnIndex}-${matchIndex}`}
+                  height={84}
+                  width={220}
+                  radius="md"
+                />
+              ))}
+            </Stack>
+          ))}
+        </Flex>
+      </Box>
+    </Container>
+  );
+}

src/features/bracket/components/bracket-view.tsx

@@ -14,9 +14,11 @@ interface BracketViewProps {
     num_groups: number;
     advance_per_group: number;
   };
+  renderMatch?: (match: Match) => React.ReactNode;
+  bottomOffset?: number;
 }
 
-const BracketView: React.FC<BracketViewProps> = ({ bracket, showControls, groupConfig }) => {
+const BracketView: React.FC<BracketViewProps> = ({ bracket, showControls, groupConfig, renderMatch, bottomOffset }) => {
   const height = useAppShellHeight();
   const viewportRef = useRef<HTMLDivElement>(null);
   const hasAutoScrolled = useRef(false);
@@ -93,16 +95,17 @@ const BracketView: React.FC<BracketViewProps> = ({ bracket, showControls, groupC
         <Text fw={600} size="md" m={16}>
           Winners Bracket
         </Text>
-        <Bracket rounds={bracket.winners} orders={orders} showControls={showControls} groupConfig={groupConfig} onMatchTap={handleMatchTap} selectedMatchLid={selectedLid} />
+        <Bracket rounds={bracket.winners} orders={orders} showControls={showControls} groupConfig={groupConfig} renderMatch={renderMatch} onMatchTap={handleMatchTap} selectedMatchLid={selectedLid} />
       </div>
       {bracket.losers && bracket.losers.length > 0 && bracket.losers.some(round => round.length > 0) && (
         <div>
           <Text fw={600} size="md" m={16}>
             Losers Bracket
           </Text>
-        <Bracket rounds={bracket.losers} orders={orders} showControls={showControls} groupConfig={groupConfig} onMatchTap={handleMatchTap} selectedMatchLid={selectedLid} />
+        <Bracket rounds={bracket.losers} orders={orders} showControls={showControls} groupConfig={groupConfig} renderMatch={renderMatch} onMatchTap={handleMatchTap} selectedMatchLid={selectedLid} />
         </div>
       )}
+      {bottomOffset ? <div style={{ height: bottomOffset }} /> : null}
     </ScrollArea>
     <MatchDock match={selectedMatch} onClose={closeDock} />
   </Box>

src/features/bracket/components/bracket.tsx

@@ -11,6 +11,7 @@ interface BracketProps {
     num_groups: number;
     advance_per_group: number;
   };
+  renderMatch?: (match: Match) => React.ReactNode;
   onMatchTap?: (match: Match) => void;
   selectedMatchLid?: number | null;
 }
@@ -20,6 +21,7 @@ export const Bracket: React.FC<BracketProps> = ({
   orders,
   showControls,
   groupConfig,
+  renderMatch,
   onMatchTap,
   selectedMatchLid,
 }) => {
@@ -137,6 +139,9 @@ export const Bracket: React.FC<BracketProps> = ({
                 <div key={match.lid}></div>
               ) : (
                 <div key={match.lid}>
+                  {renderMatch ? (
+                    renderMatch(match)
+                  ) : (
                     <MatchCard
                       match={match}
                       orders={orders}
@@ -145,6 +150,7 @@ export const Bracket: React.FC<BracketProps> = ({
                       onTap={onMatchTap}
                       selected={selectedMatchLid === match.lid}
                     />
+                  )}
                 </div>
               )
             )}

src/features/bracket/components/match-slot.tsx

@@ -6,6 +6,8 @@ import { TeamInfo } from "@/features/teams/types";
 import AnimatedScore from "@/features/matches/components/animated-score";
 import classes from "./match-slot.module.css";
 
+export type MatchSlotState = "winner" | "correct" | "incorrect";
+
 interface MatchSlotProps {
   from?: number;
   from_loser?: boolean;
@@ -14,6 +16,7 @@ interface MatchSlotProps {
   cups?: number;
   isWinner?: boolean;
   groupLabel?: string;
+  state?: MatchSlotState;
 }
 
 export const MatchSlot: React.FC<MatchSlotProps> = ({
@@ -23,7 +26,8 @@ export const MatchSlot: React.FC<MatchSlotProps> = ({
   seed,
   cups,
   isWinner,
-  groupLabel
+  groupLabel,
+  state,
 }) => {
   const teamId = team?.id;
   const previousTeamIdRef = useRef<string | undefined>(teamId);
@@ -37,11 +41,19 @@ export const MatchSlot: React.FC<MatchSlotProps> = ({
     }
   }, [teamId]);
 
+  const slotState: MatchSlotState | undefined =
+    state ?? (isWinner ? "winner" : undefined);
+  const highlighted = slotState === "winner" || slotState === "correct";
+
   return (
     <Flex
       align="stretch"
       style={{
-        backgroundColor: isWinner ? 'var(--mantine-color-green-light)' : 'transparent',
+        backgroundColor: highlighted
+          ? 'var(--mantine-color-green-light)'
+          : slotState === "incorrect"
+            ? 'var(--mantine-color-red-light)'
+            : 'transparent',
         borderRadius: 'var(--mantine-radius-sm)',
         transition: 'background-color 200ms ease',
       }}
@@ -60,11 +72,12 @@ export const MatchSlot: React.FC<MatchSlotProps> = ({
               <Text
                 size={team.name.length > 12 ? (team.name.length > 18 ? '10px' : '11px') : 'xs'}
                 truncate
+                c={slotState === "incorrect" ? "dimmed" : undefined}
                 style={{ minWidth: 0, flex: 1, lineHeight: "12px" }}
               >
                 {team.name}
               </Text>
-              {isWinner && (
+              {highlighted && (
                 <CrownIcon
                   size={14}
                   weight="fill"

src/features/bracket/utils/group.ts

@@ -0,0 +1,37 @@
+import { Match } from "@/features/matches/types";
+import { BracketData } from "../types";
+
+export const groupMatchesIntoBracket = (matches?: Match[]): BracketData => {
+  if (!matches || matches.length === 0) {
+    return { winners: [], losers: [] };
+  }
+
+  const winnersMap = new Map<number, Match[]>();
+  const losersMap = new Map<number, Match[]>();
+
+  matches
+    .filter((match) => match.round !== -1)
+    .sort((a, b) => a.lid - b.lid)
+    .forEach((match) => {
+      if (!match.is_losers_bracket) {
+        if (!winnersMap.has(match.round)) {
+          winnersMap.set(match.round, []);
+        }
+        winnersMap.get(match.round)!.push(match);
+      } else {
+        if (!losersMap.has(match.round)) {
+          losersMap.set(match.round, []);
+        }
+        losersMap.get(match.round)!.push(match);
+      }
+    });
+
+  const winners = Array.from(winnersMap.entries())
+    .sort(([a], [b]) => a - b)
+    .map(([, matches]) => matches);
+
+  const losers = Array.from(losersMap.entries())
+    .sort(([a], [b]) => a - b)
+    .map(([, matches]) => matches);
+  return { winners, losers };
+};

src/features/predictions/components/matchup-sheet.tsx

@@ -0,0 +1,78 @@
+import React from "react";
+import { Divider, Group, Paper, Stack, Text } from "@mantine/core";
+import { TeamInfo } from "@/features/teams/types";
+import TeamAvatar from "@/components/team-avatar";
+import PlayerAvatar from "@/components/player-avatar";
+import TeamHeadToHeadSheet from "@/features/matches/components/team-head-to-head-sheet";
+
+interface MatchupSheetProps {
+  home?: TeamInfo;
+  away?: TeamInfo;
+  isOpen: boolean;
+}
+
+const TeamRow = ({ team }: { team: TeamInfo }) => (
+  <Group justify="space-between" align="center" wrap="nowrap">
+    <Group gap="sm" align="center" wrap="nowrap" style={{ minWidth: 0 }}>
+      <TeamAvatar team={team} size={40} radius="sm" />
+      <Text size="sm" fw={600} lineClamp={2}>
+        {team.name}
+      </Text>
+    </Group>
+    <Stack gap={4} align="flex-end">
+      {team.players?.map((player) => {
+        const name = `${player.first_name} ${player.last_name}`;
+        return (
+          <Group key={player.id} gap={6} wrap="nowrap">
+            <Text size="xs" c="dimmed" lineClamp={1}>
+              {name}
+            </Text>
+            <PlayerAvatar name={name} size={20} disableFullscreen />
+          </Group>
+        );
+      })}
+    </Stack>
+  </Group>
+);
+
+export const MatchupSheet: React.FC<MatchupSheetProps> = ({
+  home,
+  away,
+  isOpen,
+}) => {
+  if (!home && !away) {
+    return (
+      <Text size="sm" c="dimmed" ta="center" py="md">
+        Pick the earlier matches first — these teams aren't decided yet.
+      </Text>
+    );
+  }
+
+  return (
+    <Stack gap="md">
+      <Paper p="md" withBorder radius="md">
+        <Stack gap="sm">
+          {home ? (
+            <TeamRow team={home} />
+          ) : (
+            <Text size="sm" c="dimmed">
+              Home team TBD — pick the earlier matches first
+            </Text>
+          )}
+          <Divider label="vs" labelPosition="center" />
+          {away ? (
+            <TeamRow team={away} />
+          ) : (
+            <Text size="sm" c="dimmed">
+              Away team TBD — pick the earlier matches first
+            </Text>
+          )}
+        </Stack>
+      </Paper>
+
+      {home && away && (
+        <TeamHeadToHeadSheet team1={home} team2={away} isOpen={isOpen} />
+      )}
+    </Stack>
+  );
+};

src/features/predictions/components/prediction-bracket.tsx

@@ -0,0 +1,62 @@
+import React, { useMemo } from "react";
+import BracketView from "@/features/bracket/components/bracket-view";
+import { groupMatchesIntoBracket } from "@/features/bracket/utils/group";
+import { Match } from "@/features/matches/types";
+import { PicksMap } from "../types";
+import { PickResult, resolvePredictedBracket } from "../utils";
+import { PredictionMatchCard } from "./prediction-match-card";
+
+interface PredictionBracketProps {
+  matches: Match[];
+  picks: PicksMap;
+  mode: "edit" | "view";
+  perMatch?: Map<number, PickResult>;
+  activeLid?: number;
+  onActivate?: (lid: number) => void;
+}
+
+export const PredictionBracket: React.FC<PredictionBracketProps> = ({
+  matches,
+  picks,
+  mode,
+  perMatch,
+  activeLid,
+  onActivate,
+}) => {
+  const bracket = useMemo(() => groupMatchesIntoBracket(matches), [matches]);
+
+  const resolved = useMemo(
+    () => resolvePredictedBracket(matches, picks),
+    [matches, picks]
+  );
+
+  const orders = useMemo(() => {
+    const map: Record<number, number> = {};
+    bracket.winners.flat().forEach((match) => (map[match.lid] = match.order));
+    bracket.losers.flat().forEach((match) => (map[match.lid] = match.order));
+    return map;
+  }, [bracket]);
+
+  return (
+    <BracketView
+      bracket={bracket}
+      bottomOffset={110}
+      renderMatch={(match) => (
+        <PredictionMatchCard
+          match={match}
+          resolved={resolved.get(match.lid)}
+          orders={orders}
+          mode={mode}
+          result={perMatch?.get(match.lid)}
+          active={activeLid === match.lid}
+          onActivate={
+            onActivate &&
+            (!match.reset || resolved.get(match.lid)?.resetNecessary)
+              ? () => onActivate(match.lid)
+              : undefined
+          }
+        />
+      )}
+    />
+  );
+};

src/features/predictions/components/prediction-editor.tsx

@@ -0,0 +1,252 @@
+import {
+  ActionIcon,
+  Box,
+  Button,
+  Group,
+  Paper,
+  Stack,
+  Text,
+} from "@mantine/core";
+import { CaretLeftIcon, CaretRightIcon, InfoIcon } from "@phosphor-icons/react";
+import WizardOrbIcon from "@/components/wizard-orb-icon";
+import { useNavigate } from "@tanstack/react-router";
+import React, { useEffect, useMemo, useRef, useState } from "react";
+import { Tournament } from "@/features/tournaments/types";
+import Sheet from "@/components/sheet/sheet";
+import { useSheet } from "@/hooks/use-sheet";
+import { PicksMap } from "../types";
+import { useSubmitPrediction } from "../queries";
+import {
+  getMatchLabel,
+  getPickableMatches,
+  resolvePredictedBracket,
+  setPick,
+} from "../utils";
+import { PredictionBracket } from "./prediction-bracket";
+import { MatchupSheet } from "./matchup-sheet";
+import { WinnerSelector } from "./winner-selector";
+
+interface PredictionEditorProps {
+  tournament: Tournament;
+  initialPicks: PicksMap;
+}
+
+export const PredictionEditor: React.FC<PredictionEditorProps> = ({
+  tournament,
+  initialPicks,
+}) => {
+  const navigate = useNavigate();
+  const containerRef = useRef<HTMLDivElement>(null);
+  const matchupSheet = useSheet();
+  const matches = tournament.matches || [];
+  const [picks, setPicks] = useState<PicksMap>(initialPicks);
+
+  const pickable = useMemo(
+    () => getPickableMatches(matches, picks),
+    [matches, picks]
+  );
+
+  const resolved = useMemo(
+    () => resolvePredictedBracket(matches, picks),
+    [matches, picks]
+  );
+
+  const firstUnpickedLid = useMemo(
+    () =>
+      pickable.find((match) => !resolved.get(match.lid)?.pickedWinnerId)?.lid,
+    [pickable, resolved]
+  );
+
+  const [activeLid, setActiveLid] = useState<number | undefined>(undefined);
+  useEffect(() => {
+    if (activeLid === undefined && pickable.length > 0) {
+      setActiveLid(firstUnpickedLid ?? pickable[0].lid);
+    }
+  }, [activeLid, firstUnpickedLid, pickable]);
+
+  useEffect(() => {
+    if (activeLid === undefined) return;
+    const card = containerRef.current?.querySelector(
+      `[data-match-lid="${activeLid}"]`
+    ) as HTMLElement | null;
+    const viewport = card?.closest(
+      ".mantine-ScrollArea-viewport"
+    ) as HTMLElement | null;
+    if (!card || !viewport) return;
+
+    const cardRect = card.getBoundingClientRect();
+    const viewportRect = viewport.getBoundingClientRect();
+    viewport.scrollTo({
+      left: Math.max(
+        0,
+        viewport.scrollLeft +
+          (cardRect.left - viewportRect.left) -
+          (viewportRect.width - cardRect.width) / 2
+      ),
+      top: Math.max(
+        0,
+        viewport.scrollTop +
+          (cardRect.top - viewportRect.top) -
+          (viewportRect.height - cardRect.height) / 2
+      ),
+      behavior: "smooth",
+    });
+  }, [activeLid]);
+
+  const pickedCount = pickable.filter(
+    (match) => resolved.get(match.lid)?.pickedWinnerId
+  ).length;
+  const complete = pickedCount === pickable.length;
+
+  const submit = useSubmitPrediction(tournament.id);
+
+  const handlePick = (lid: number, teamId: string) => {
+    const next = setPick(matches, picks, lid, teamId);
+    setPicks(next);
+
+    const nextResolved = resolvePredictedBracket(matches, next);
+    const nextPickable = getPickableMatches(matches, next);
+    const nextUnpicked = nextPickable.find(
+      (match) => !nextResolved.get(match.lid)?.pickedWinnerId
+    );
+    setActiveLid(nextUnpicked?.lid ?? lid);
+  };
+
+  const activeIndex = pickable.findIndex((match) => match.lid === activeLid);
+  const stepTo = (offset: number) => {
+    const next = pickable[activeIndex + offset];
+    if (next) setActiveLid(next.lid);
+  };
+
+  const activeResolved =
+    activeLid !== undefined ? resolved.get(activeLid) : undefined;
+  const activeMatch = pickable[activeIndex];
+
+  const handleSubmit = async () => {
+    try {
+      await submit.mutateAsync({
+        data: { tournamentId: tournament.id, picks },
+      });
+      navigate({ to: "/" });
+    } catch {
+    }
+  };
+
+  return (
+    <Box pos="relative" ref={containerRef}>
+      <PredictionBracket
+        matches={matches}
+        picks={picks}
+        mode="edit"
+        activeLid={activeLid}
+        onActivate={setActiveLid}
+      />
+
+      <Box
+        pos="absolute"
+        left={0}
+        right={0}
+        bottom={0}
+        p="md"
+        style={{ zIndex: 2, pointerEvents: "none" }}
+      >
+        <Paper
+          withBorder
+          shadow="md"
+          radius="lg"
+          p="sm"
+          style={{
+            pointerEvents: "auto",
+            borderColor: "var(--mantine-primary-color-filled)",
+          }}
+        >
+          <Stack gap="xs">
+            {activeMatch && (
+              <>
+                <Group gap={6} align="center" wrap="nowrap">
+                  <WizardOrbIcon
+                    size={16}
+                    weight="duotone"
+                    color="var(--mantine-primary-color-filled)"
+                  />
+                  <Text
+                    size="xs"
+                    fw={700}
+                    tt="uppercase"
+                    c="var(--mantine-primary-color-filled)"
+                    style={{ letterSpacing: 0.5 }}
+                  >
+                    {getMatchLabel(matches, activeMatch)}
+                  </Text>
+                </Group>
+                <WinnerSelector
+                  home={activeResolved?.home}
+                  away={activeResolved?.away}
+                  pickedId={activeResolved?.pickedWinnerId}
+                  onSelect={(teamId) => handlePick(activeMatch.lid, teamId)}
+                />
+              </>
+            )}
+            <Group justify="space-between" align="center" wrap="nowrap">
+              <Group gap={4} align="center" wrap="nowrap">
+                <ActionIcon
+                  variant="default"
+                  size="lg"
+                  radius="md"
+                  onClick={() => stepTo(-1)}
+                  disabled={activeIndex <= 0}
+                  aria-label="Previous match"
+                >
+                  <CaretLeftIcon size={16} />
+                </ActionIcon>
+                <ActionIcon
+                  variant="default"
+                  size="lg"
+                  radius="md"
+                  onClick={() => stepTo(1)}
+                  disabled={activeIndex < 0 || activeIndex >= pickable.length - 1}
+                  aria-label="Next match"
+                >
+                  <CaretRightIcon size={16} />
+                </ActionIcon>
+                <ActionIcon
+                  variant="default"
+                  size="lg"
+                  radius="md"
+                  onClick={matchupSheet.open}
+                  disabled={!activeResolved?.home && !activeResolved?.away}
+                  aria-label="Matchup details"
+                >
+                  <InfoIcon size={16} />
+                </ActionIcon>
+              </Group>
+              <Group gap="sm" align="center" wrap="nowrap">
+                <Text size="sm" fw={600} c={complete ? undefined : "dimmed"}>
+                  {pickedCount}/{pickable.length}
+                </Text>
+                <Button
+                  disabled={!complete}
+                  loading={submit.isPending}
+                  onClick={handleSubmit}
+                >
+                  Submit
+                </Button>
+              </Group>
+            </Group>
+          </Stack>
+        </Paper>
+      </Box>
+
+      <Sheet
+        title={activeMatch ? getMatchLabel(matches, activeMatch) : "Matchup"}
+        {...matchupSheet.props}
+      >
+        <MatchupSheet
+          home={activeResolved?.home}
+          away={activeResolved?.away}
+          isOpen={matchupSheet.isOpen}
+        />
+      </Sheet>
+    </Box>
+  );
+};

src/features/predictions/components/prediction-leaderboard.tsx

@@ -0,0 +1,266 @@
+import React, { useMemo } from "react";
+import {
+  ActionIcon,
+  Box,
+  Button,
+  Divider,
+  Group,
+  Popover,
+  Stack,
+  Text,
+  ThemeIcon,
+  Title,
+  UnstyledButton,
+} from "@mantine/core";
+import { CrownIcon, InfoIcon } from "@phosphor-icons/react";
+import WizardOrbIcon from "@/components/wizard-orb-icon";
+import { useNavigate } from "@tanstack/react-router";
+import { Tournament } from "@/features/tournaments/types";
+import PlayerAvatar from "@/components/player-avatar";
+import { useServerQuery } from "@/lib/tanstack-query/hooks";
+import { predictionQueries, usePredictionsLeaderboard } from "../queries";
+import { isPredictionLocked, isTournamentPredictable } from "../utils";
+
+interface PredictionLeaderboardProps {
+  tournament: Tournament;
+}
+
+export const PredictionLeaderboard: React.FC<PredictionLeaderboardProps> = ({
+  tournament,
+}) => {
+  const navigate = useNavigate();
+  const { data: leaderboard } = usePredictionsLeaderboard(tournament.id);
+
+  const matches = tournament.matches || [];
+  const isComplete = useMemo(() => {
+    const nonByeMatches = matches.filter(
+      (match) => !(match.status === "tbd" && match.bye === true)
+    );
+    return (
+      nonByeMatches.length > 0 &&
+      nonByeMatches.every((match) => match.status === "ended")
+    );
+  }, [matches]);
+
+  const predictionsOpen =
+    isTournamentPredictable(tournament) && !isPredictionLocked(matches);
+
+  const { data: myPrediction } = useServerQuery({
+    ...predictionQueries.mine(tournament.id),
+    options: { enabled: !leaderboard.locked && predictionsOpen },
+  });
+
+  if (!leaderboard.locked) {
+    const cta = predictionsOpen ? (
+      <Button
+        onClick={() =>
+          navigate({
+            to: "/tournaments/$id/predictions/make",
+            params: { id: tournament.id },
+          })
+        }
+      >
+        {myPrediction?.prediction
+          ? "Edit Your Prediction"
+          : "Make Your Prediction"}
+      </Button>
+    ) : undefined;
+
+    return (
+      <Stack gap={0}>
+        <Stack align="center" gap="md" py="xl">
+          <WizardOrbIcon
+            size={56}
+            weight="duotone"
+            color="var(--mantine-primary-color-filled)"
+          />
+          <Stack align="center" gap={4}>
+            <Title order={3} c="dimmed" ta="center">
+              Predictions are open
+            </Title>
+            <Text size="sm" c="dimmed" ta="center" maw={280}>
+              Other players' predictions are hidden until the tournament
+              starts.
+            </Text>
+          </Stack>
+          {cta}
+        </Stack>
+        {leaderboard.submitters.length > 0 && (
+          <>
+            <Text px="md" size="sm" fw={600} pb="xs">
+              {leaderboard.count} bracket{leaderboard.count === 1 ? "" : "s"} in
+            </Text>
+            {leaderboard.submitters.map((player, index) => {
+              const name = `${player.first_name} ${player.last_name}`;
+              return (
+                <Box key={player.id}>
+                  <Group gap="sm" align="center" p="md" wrap="nowrap">
+                    <PlayerAvatar name={name} size={32} disableFullscreen />
+                    <Text size="sm" fw={600} lineClamp={1}>
+                      {name}
+                    </Text>
+                  </Group>
+                  {index < leaderboard.submitters.length - 1 && <Divider />}
+                </Box>
+              );
+            })}
+          </>
+        )}
+      </Stack>
+    );
+  }
+
+  if (leaderboard.entries.length === 0) {
+    return (
+      <Stack align="center" gap="md" py="xl">
+        <WizardOrbIcon
+          size={56}
+          weight="duotone"
+          color="var(--mantine-primary-color-filled)"
+        />
+        <Stack align="center" gap={4}>
+          <Title order={3} c="dimmed" ta="center">
+            No predictions
+          </Title>
+          <Text size="sm" c="dimmed" ta="center" maw={280}>
+            Nobody made a prediction for this tournament.
+          </Text>
+        </Stack>
+      </Stack>
+    );
+  }
+
+  return (
+    <Stack gap={0}>
+      <Group px="md" justify="space-between" align="center" wrap="nowrap">
+        <Text size="lg" fw={600}>
+          Predictions
+        </Text>
+        <Popover position="bottom-end" withArrow shadow="md">
+          <Popover.Target>
+            <ActionIcon
+              variant="subtle"
+              size="sm"
+              aria-label="How prediction scoring works"
+            >
+              <InfoIcon size={14} />
+            </ActionIcon>
+          </Popover.Target>
+          <Popover.Dropdown>
+            <Box maw={280}>
+              <Text size="sm" fw={500} mb="xs">
+                Prediction Scoring:
+              </Text>
+              <Text size="xs" mb={2}>
+                • Each correct pick earns points, doubling every round
+              </Text>
+              <Text size="xs" mb={2}>
+                • <strong>Winners bracket:</strong> 10, 20, 40, 80…
+              </Text>
+              <Text size="xs" mb={2}>
+                • <strong>Losers bracket:</strong> 5, 10, 20, 40…
+              </Text>
+              <Text size="xs" mb={2}>
+                • <strong>Bracket reset:</strong> only picked if your bracket
+                triggers it — worth double the Final
+              </Text>
+
+              <Divider my="sm" />
+
+              <Text size="sm" fw={500} mb="xs">
+                Tiebreakers:
+              </Text>
+              <Text size="xs" mb={2}>
+                1. Correct champion pick
+              </Text>
+              <Text size="xs" mb={2}>
+                2. Earlier submission
+              </Text>
+              <Text size="xs" mt="xs" c="dimmed">
+                * PICKS shows correct picks / total picks made
+              </Text>
+            </Box>
+          </Popover.Dropdown>
+        </Popover>
+      </Group>
+      <Text px="md" c="dimmed" size="xs" fw={500}>
+        Correct picks are worth more each round
+      </Text>
+      {leaderboard.entries.map((entry, index) => {
+        const name = `${entry.player.first_name} ${entry.player.last_name}`;
+
+        return (
+          <Box key={entry.player.id}>
+            <UnstyledButton
+              w="100%"
+              p="md"
+              style={{ borderRadius: 0 }}
+              onClick={() =>
+                navigate({
+                  to: "/tournaments/$id/predictions/$playerId",
+                  params: { id: tournament.id, playerId: entry.player.id },
+                })
+              }
+            >
+              <Group justify="space-between" align="center" w="100%" wrap="nowrap">
+                <Group gap="sm" align="center" wrap="nowrap">
+                  <PlayerAvatar name={name} size={40} disableFullscreen />
+                  <Stack gap={2}>
+                    <Group gap="xs" wrap="nowrap">
+                      <Text size="xs" c="dimmed">
+                        #{index + 1}
+                      </Text>
+                      <Text size="sm" fw={600} lineClamp={1}>
+                        {name}
+                      </Text>
+                      {index === 0 && isComplete && (
+                        <ThemeIcon size="xs" color="yellow" variant="light" radius="xl">
+                          <CrownIcon size={12} />
+                        </ThemeIcon>
+                      )}
+                    </Group>
+                    {entry.championPick && (
+                      <Group gap={4} wrap="nowrap">
+                        <CrownIcon
+                          size={12}
+                          weight="fill"
+                          color={
+                            entry.championCorrect && isComplete
+                              ? "gold"
+                              : "var(--mantine-color-dimmed)"
+                          }
+                        />
+                        <Text size="xs" c="dimmed" lineClamp={1}>
+                          {entry.championPick.name}
+                        </Text>
+                      </Group>
+                    )}
+                  </Stack>
+                </Group>
+                <Group gap="md" wrap="nowrap">
+                  <Stack gap={0} ta="center">
+                    <Text size="xs" c="dimmed" fw={700}>
+                      PTS
+                    </Text>
+                    <Text size="sm" fw={700}>
+                      {entry.points}
+                    </Text>
+                  </Stack>
+                  <Stack gap={0} ta="center">
+                    <Text size="xs" c="dimmed" fw={700}>
+                      PICKS
+                    </Text>
+                    <Text size="xs" c="dimmed">
+                      {entry.correct}/{entry.total}
+                    </Text>
+                  </Stack>
+                </Group>
+              </Group>
+            </UnstyledButton>
+            {index < leaderboard.entries.length - 1 && <Divider />}
+          </Box>
+        );
+      })}
+    </Stack>
+  );
+};

src/features/predictions/components/prediction-match-card.tsx

@@ -0,0 +1,113 @@
+import { Card, Flex, Text } from "@mantine/core";
+import React from "react";
+import { MatchSlot, MatchSlotState } from "@/features/bracket/components/match-slot";
+import { Match } from "@/features/matches/types";
+import { PickResult, ResolvedMatch } from "../utils";
+
+interface PredictionMatchCardProps {
+  match: Match;
+  resolved?: ResolvedMatch;
+  orders: Record<number, number>;
+  mode: "edit" | "view";
+  result?: PickResult;
+  active?: boolean;
+  onActivate?: () => void;
+}
+
+const pickedState = (mode: "edit" | "view", result?: PickResult): MatchSlotState => {
+  if (mode === "edit") return "winner";
+  if (result === "correct") return "correct";
+  if (result === "incorrect") return "incorrect";
+  return "winner";
+};
+
+export const PredictionMatchCard: React.FC<PredictionMatchCardProps> = ({
+  match,
+  resolved,
+  orders,
+  mode,
+  result,
+  active,
+  onActivate,
+}) => {
+  const resetLive = !match.reset || !!resolved?.resetNecessary;
+
+  const slotProps = (side: "home" | "away") => {
+    const team = side === "home" ? resolved?.home : resolved?.away;
+    const teamId = side === "home" ? resolved?.homeId : resolved?.awayId;
+    const isPicked =
+      !!teamId && resetLive && resolved?.pickedWinnerId === teamId;
+
+    return {
+      from: orders[side === "home" ? match.home_from_lid : match.away_from_lid],
+      from_loser:
+        side === "home" ? match.home_from_loser : match.away_from_loser,
+      team,
+      seed: side === "home" ? match.home_seed : match.away_seed,
+      state: isPicked ? pickedState(mode, result) : undefined,
+    };
+  };
+
+  return (
+    <Flex
+      direction="row"
+      align="center"
+      justify="end"
+      gap={8}
+      opacity={resetLive ? 1 : 0.55}
+      style={{ transition: "opacity 200ms ease" }}
+    >
+      <Text
+        c="dimmed"
+        fw="bolder"
+        px={6}
+        py={2}
+        style={{
+          backgroundColor: 'var(--mantine-color-body)'
+        }}
+      >
+        {match.order}
+      </Text>
+      <Card
+        w={220}
+        withBorder
+        pos="relative"
+        onClick={onActivate}
+        style={{
+          cursor: onActivate ? "pointer" : undefined,
+          overflow: "visible",
+          backgroundColor: 'var(--mantine-color-body)',
+          borderColor: active
+            ? 'var(--mantine-primary-color-filled)'
+            : 'var(--mantine-color-default-border)',
+          boxShadow: active
+            ? '0 0 0 1px var(--mantine-primary-color-filled), 0 0 12px var(--mantine-primary-color-light-hover), var(--mantine-shadow-sm)'
+            : 'var(--mantine-shadow-sm)',
+          transition: 'border-color 200ms ease, box-shadow 200ms ease',
+        }}
+        data-match-lid={match.lid}
+      >
+        <Card.Section withBorder p={0}>
+          <MatchSlot {...slotProps("home")} />
+        </Card.Section>
+
+        <Card.Section p={0} mb={-16}>
+          <MatchSlot {...slotProps("away")} />
+        </Card.Section>
+
+        {match.reset && (
+          <Text
+            pos="absolute"
+            top={-20}
+            left={8}
+            size="xs"
+            c="dimmed"
+            fw="bold"
+          >
+            * If necessary
+          </Text>
+        )}
+      </Card>
+    </Flex>
+  );
+};

src/features/predictions/components/winner-selector.tsx

@@ -0,0 +1,113 @@
+import React from "react";
+import { Group, Text, UnstyledButton } from "@mantine/core";
+import { CrownIcon } from "@phosphor-icons/react";
+import { TeamInfo } from "@/features/teams/types";
+import TeamAvatar from "@/components/team-avatar";
+
+interface WinnerSelectorProps {
+  home?: TeamInfo;
+  away?: TeamInfo;
+  pickedId?: string;
+  onSelect: (teamId: string) => void;
+}
+
+const TeamChip = ({
+  team,
+  picked,
+  onSelect,
+}: {
+  team?: TeamInfo;
+  picked: boolean;
+  onSelect: (teamId: string) => void;
+}) => {
+  if (!team) {
+    return (
+      <Group
+        gap={8}
+        wrap="nowrap"
+        justify="center"
+        p="6px 10px"
+        style={{
+          flex: 1,
+          minWidth: 0,
+          border: "1px dashed var(--mantine-color-default-border)",
+          borderRadius: "var(--mantine-radius-md)",
+        }}
+      >
+        <Text size="xs" c="dimmed">
+          TBD
+        </Text>
+      </Group>
+    );
+  }
+
+  return (
+    <UnstyledButton
+      onClick={() => onSelect(team.id)}
+      style={{ flex: 1, minWidth: 0 }}
+      aria-pressed={picked}
+    >
+      <Group
+        gap={8}
+        wrap="nowrap"
+        p="6px 10px"
+        style={{
+          border: `1px solid ${
+            picked
+              ? "var(--mantine-color-green-light-color)"
+              : "var(--mantine-color-default-border)"
+          }`,
+          borderRadius: "var(--mantine-radius-md)",
+          backgroundColor: picked
+            ? "var(--mantine-color-green-light)"
+            : "transparent",
+          transition: "background-color 200ms ease, border-color 200ms ease",
+        }}
+      >
+        <TeamAvatar team={team} size={26} radius="sm" disableFullscreen />
+        <Text
+          size="xs"
+          fw={600}
+          truncate
+          style={{ flex: 1, minWidth: 0 }}
+        >
+          {team.name}
+        </Text>
+        {picked && (
+          <CrownIcon
+            size={14}
+            weight="fill"
+            style={{
+              color: "gold",
+              filter: "drop-shadow(0 1px 1px rgba(0,0,0,0.3))",
+              flexShrink: 0,
+            }}
+          />
+        )}
+      </Group>
+    </UnstyledButton>
+  );
+};
+
+export const WinnerSelector: React.FC<WinnerSelectorProps> = ({
+  home,
+  away,
+  pickedId,
+  onSelect,
+}) => (
+  <Group gap="xs" wrap="nowrap" align="center">
+    <TeamChip
+      team={home}
+      picked={!!home && pickedId === home.id}
+      onSelect={onSelect}
+    />
+    <Text size="xs" c="dimmed" fw={700}>
+      vs
+    </Text>
+    <TeamChip
+      team={away}
+      picked={!!away && pickedId === away.id}
+      onSelect={onSelect}
+    />
+  </Group>
+);

src/features/predictions/queries.ts

@@ -0,0 +1,56 @@
+import { useQueryClient } from "@tanstack/react-query";
+import {
+  useServerMutation,
+  useServerSuspenseQuery,
+} from "@/lib/tanstack-query/hooks";
+import {
+  getMyPrediction,
+  getPlayerPrediction,
+  getPredictionsLeaderboard,
+  submitPrediction,
+} from "./server";
+
+export const predictionKeys = {
+  tournament: (tournamentId: string) => ['predictions', tournamentId] as const,
+  mine: (tournamentId: string) => ['predictions', tournamentId, 'mine'] as const,
+  leaderboard: (tournamentId: string) => ['predictions', tournamentId, 'leaderboard'] as const,
+  player: (tournamentId: string, playerId: string) => ['predictions', tournamentId, 'player', playerId] as const,
+};
+
+export const predictionQueries = {
+  mine: (tournamentId: string) => ({
+    queryKey: predictionKeys.mine(tournamentId),
+    queryFn: () => getMyPrediction({ data: tournamentId }),
+  }),
+  leaderboard: (tournamentId: string) => ({
+    queryKey: predictionKeys.leaderboard(tournamentId),
+    queryFn: () => getPredictionsLeaderboard({ data: tournamentId }),
+  }),
+  player: (tournamentId: string, playerId: string) => ({
+    queryKey: predictionKeys.player(tournamentId, playerId),
+    queryFn: () => getPlayerPrediction({ data: { tournamentId, playerId } }),
+  }),
+};
+
+export const useMyPrediction = (tournamentId: string) =>
+  useServerSuspenseQuery(predictionQueries.mine(tournamentId));
+
+export const usePredictionsLeaderboard = (tournamentId: string) =>
+  useServerSuspenseQuery(predictionQueries.leaderboard(tournamentId));
+
+export const usePlayerPrediction = (tournamentId: string, playerId: string) =>
+  useServerSuspenseQuery(predictionQueries.player(tournamentId, playerId));
+
+export const useSubmitPrediction = (tournamentId: string) => {
+  const queryClient = useQueryClient();
+
+  return useServerMutation({
+    mutationFn: submitPrediction,
+    successMessage: "Prediction saved!",
+    onSuccess: () => {
+      queryClient.invalidateQueries({
+        queryKey: predictionKeys.tournament(tournamentId),
+      });
+    },
+  });
+};

src/features/predictions/server.ts

@@ -0,0 +1,179 @@
+import { createServerFn } from "@tanstack/react-start";
+import { z } from "zod";
+import { pbAdmin } from "@/lib/pocketbase/client";
+import { logger } from "@/lib/logger";
+import { toServerResult } from "@/lib/tanstack-query/utils/to-server-result";
+import { superTokensFunctionMiddleware } from "@/utils/supertokens";
+import { serverFnLoggingMiddleware } from "@/utils/activities";
+import { Tournament } from "@/features/tournaments/types";
+import {
+  MyPrediction,
+  Prediction,
+  PredictionLeaderboardEntry,
+  PredictionsLeaderboard,
+} from "./types";
+import {
+  computePredictionScore,
+  getPickableMatches,
+  isPredictionComplete,
+  isPredictionLocked,
+  isTournamentPredictable,
+} from "./utils";
+
+const getTournamentOrThrow = async (tournamentId: string): Promise<Tournament> => {
+  const tournament = await pbAdmin.getTournament(tournamentId);
+  if (!tournament) {
+    throw new Error("Tournament not found");
+  }
+  return tournament;
+};
+
+export const getMyPrediction = createServerFn()
+  .validator(z.string())
+  .middleware([superTokensFunctionMiddleware])
+  .handler(async ({ data: tournamentId, context }) =>
+    toServerResult(async (): Promise<MyPrediction> => {
+      const tournament = await getTournamentOrThrow(tournamentId);
+      const matches = tournament.matches || [];
+
+      const player = await pbAdmin.getPlayerByAuthId(context.userAuthId);
+      const prediction = player
+        ? await pbAdmin.getPrediction(tournamentId, player.id)
+        : null;
+
+      return {
+        prediction,
+        locked: isPredictionLocked(matches),
+        eligible: isTournamentPredictable(tournament),
+      };
+    })
+  );
+
+const submitPredictionSchema = z.object({
+  tournamentId: z.string(),
+  picks: z.record(z.string(), z.string()),
+});
+
+export const submitPrediction = createServerFn()
+  .validator(submitPredictionSchema)
+  .middleware([superTokensFunctionMiddleware, serverFnLoggingMiddleware])
+  .handler(async ({ data: { tournamentId, picks }, context }) =>
+    toServerResult(async (): Promise<Prediction> => {
+      const player = await pbAdmin.getPlayerByAuthId(context.userAuthId);
+      if (!player) {
+        throw new Error("Player not found");
+      }
+
+      const tournament = await getTournamentOrThrow(tournamentId);
+      const matches = tournament.matches || [];
+
+      if (!isTournamentPredictable(tournament)) {
+        throw new Error("Predictions are not available for this tournament");
+      }
+
+      if (isPredictionLocked(matches)) {
+        throw new Error("Predictions are locked — the tournament has started");
+      }
+
+      const pickableLids = new Set(
+        getPickableMatches(matches, picks).map((match) => String(match.lid))
+      );
+      const pickKeys = Object.keys(picks);
+      if (
+        pickKeys.length !== pickableLids.size ||
+        pickKeys.some((lid) => !pickableLids.has(lid))
+      ) {
+        throw new Error("Prediction must include a pick for every match");
+      }
+
+      if (!isPredictionComplete(matches, picks)) {
+        throw new Error("Prediction contains invalid picks");
+      }
+
+      const prediction = await pbAdmin.upsertPrediction(
+        tournamentId,
+        player.id,
+        picks
+      );
+
+      logger.info("Prediction submitted", {
+        tournamentId,
+        playerId: player.id,
+        pickCount: pickKeys.length,
+      });
+
+      return prediction;
+    })
+  );
+
+export const getPredictionsLeaderboard = createServerFn()
+  .validator(z.string())
+  .middleware([superTokensFunctionMiddleware])
+  .handler(async ({ data: tournamentId }) =>
+    toServerResult(async (): Promise<PredictionsLeaderboard> => {
+      const tournament = await getTournamentOrThrow(tournamentId);
+      const matches = tournament.matches || [];
+      const locked = isPredictionLocked(matches);
+
+      const predictions = await pbAdmin.getPredictionsForTournament(tournamentId);
+      const submitters = predictions.map((prediction) => prediction.player);
+
+      if (!locked) {
+        return { locked, count: predictions.length, entries: [], submitters };
+      }
+
+      const entries: PredictionLeaderboardEntry[] = predictions.map(
+        (prediction) => {
+          const score = computePredictionScore(matches, prediction.picks);
+          const championPick = tournament.teams?.find(
+            (team) => team.id === score.predictedChampionId
+          );
+
+          return {
+            player: prediction.player,
+            points: score.points,
+            correct: score.correct,
+            total: score.total,
+            championPick,
+            championCorrect:
+              !!score.predictedChampionId &&
+              score.predictedChampionId === tournament.first_place?.id,
+            updated: prediction.updated,
+          };
+        }
+      );
+
+      entries.sort(
+        (a, b) =>
+          b.points - a.points ||
+          Number(b.championCorrect) - Number(a.championCorrect) ||
+          a.updated.localeCompare(b.updated) ||
+          (a.player.first_name ?? "").localeCompare(b.player.first_name ?? "")
+      );
+
+      return { locked, count: entries.length, entries, submitters };
+    })
+  );
+
+const playerPredictionSchema = z.object({
+  tournamentId: z.string(),
+  playerId: z.string(),
+});
+
+export const getPlayerPrediction = createServerFn()
+  .validator(playerPredictionSchema)
+  .middleware([superTokensFunctionMiddleware])
+  .handler(async ({ data: { tournamentId, playerId }, context }) =>
+    toServerResult(async (): Promise<Prediction | null> => {
+      const tournament = await getTournamentOrThrow(tournamentId);
+
+      if (!isPredictionLocked(tournament.matches || [])) {
+        const me = await pbAdmin.getPlayerByAuthId(context.userAuthId);
+        if (me?.id !== playerId) {
+          throw new Error("Predictions are private until the tournament starts");
+        }
+      }
+
+      return pbAdmin.getPrediction(tournamentId, playerId);
+    })
+  );

src/features/predictions/types.ts

@@ -0,0 +1,36 @@
+import { PlayerInfo } from "@/features/players/types";
+import { TeamInfo } from "@/features/teams/types";
+
+export type PicksMap = Record<string, string>;
+
+export interface Prediction {
+  id: string;
+  tournament: string;
+  player: PlayerInfo;
+  picks: PicksMap;
+  created: string;
+  updated: string;
+}
+
+export interface PredictionLeaderboardEntry {
+  player: PlayerInfo;
+  points: number;
+  correct: number;
+  total: number;
+  championPick?: TeamInfo;
+  championCorrect: boolean;
+  updated: string;
+}
+
+export interface PredictionsLeaderboard {
+  locked: boolean;
+  count: number;
+  entries: PredictionLeaderboardEntry[];
+  submitters: PlayerInfo[];
+}
+
+export interface MyPrediction {
+  prediction: Prediction | null;
+  locked: boolean;
+  eligible: boolean;
+}

src/features/predictions/utils.ts

@@ -0,0 +1,240 @@
+import { Match } from "@/features/matches/types";
+import { Team, TeamInfo } from "@/features/teams/types";
+import { Tournament } from "@/features/tournaments/types";
+import { PicksMap } from "./types";
+
+const teamId = (team?: TeamInfo | Team | string): string | undefined =>
+  typeof team === "string" ? team : team?.id;
+
+const asTeamInfo = (team?: TeamInfo | Team | string): TeamInfo | undefined =>
+  typeof team === "string" ? undefined : team;
+
+export interface ResolvedMatch {
+  lid: number;
+  home?: TeamInfo;
+  homeId?: string;
+  away?: TeamInfo;
+  awayId?: string;
+  pickedWinner?: TeamInfo;
+  pickedWinnerId?: string;
+  pickedLoser?: TeamInfo;
+  pickedLoserId?: string;
+  resetNecessary?: boolean;
+}
+
+const isBracketMatch = (match: Match) => match.round !== -1 && !match.bye;
+
+export const getPickableMatches = (
+  matches: Match[],
+  picks: PicksMap
+): Match[] => {
+  const resolved = resolvePredictedBracket(matches, picks);
+  return matches
+    .filter(
+      (match) =>
+        isBracketMatch(match) &&
+        (!match.reset || resolved.get(match.lid)?.resetNecessary)
+    )
+    .sort((a, b) => a.lid - b.lid);
+};
+
+export const isPredictionLocked = (matches: Match[]): boolean =>
+  matches.some(
+    (match) => match.status === "started" || match.status === "ended"
+  );
+
+export const isTournamentPredictable = (tournament: Tournament): boolean => {
+  const matches = tournament.matches || [];
+  return (
+    !tournament.regional &&
+    matches.length > 0 &&
+    !matches.some((match) => match.round === -1)
+  );
+};
+
+const resolveInternal = (
+  matches: Match[],
+  picks: PicksMap,
+  prune: boolean
+): { resolved: Map<number, ResolvedMatch>; picks: PicksMap } => {
+  const resolved = new Map<number, ResolvedMatch>();
+  const nextPicks: PicksMap = { ...picks };
+
+  const bracketMatches = matches
+    .filter(isBracketMatch)
+    .sort((a, b) => a.lid - b.lid);
+
+  for (const match of bracketMatches) {
+    const entry: ResolvedMatch = { lid: match.lid };
+
+    if (match.home_from_lid === -1) {
+      entry.home = asTeamInfo(match.home);
+      entry.homeId = teamId(match.home);
+    } else {
+      const source = resolved.get(match.home_from_lid);
+      entry.home = match.home_from_loser
+        ? source?.pickedLoser
+        : source?.pickedWinner;
+      entry.homeId = match.home_from_loser
+        ? source?.pickedLoserId
+        : source?.pickedWinnerId;
+    }
+
+    if (match.away_from_lid === -1) {
+      entry.away = asTeamInfo(match.away);
+      entry.awayId = teamId(match.away);
+    } else {
+      const source = resolved.get(match.away_from_lid);
+      entry.away = match.away_from_loser
+        ? source?.pickedLoser
+        : source?.pickedWinner;
+      entry.awayId = match.away_from_loser
+        ? source?.pickedLoserId
+        : source?.pickedWinnerId;
+    }
+
+    let pickEligible = true;
+    if (match.reset) {
+      const grandFinal = resolved.get(match.home_from_lid);
+      entry.resetNecessary =
+        !!grandFinal?.pickedWinnerId &&
+        grandFinal.pickedWinnerId === grandFinal.awayId;
+      pickEligible = entry.resetNecessary;
+    }
+
+    const pickId = nextPicks[String(match.lid)];
+    if (pickEligible && pickId && pickId === entry.homeId) {
+      entry.pickedWinner = entry.home;
+      entry.pickedWinnerId = entry.homeId;
+      entry.pickedLoser = entry.away;
+      entry.pickedLoserId = entry.awayId;
+    } else if (pickEligible && pickId && pickId === entry.awayId) {
+      entry.pickedWinner = entry.away;
+      entry.pickedWinnerId = entry.awayId;
+      entry.pickedLoser = entry.home;
+      entry.pickedLoserId = entry.homeId;
+    } else if (pickId && prune) {
+      delete nextPicks[String(match.lid)];
+    }
+
+    resolved.set(match.lid, entry);
+  }
+
+  return { resolved, picks: nextPicks };
+};
+
+export const resolvePredictedBracket = (
+  matches: Match[],
+  picks: PicksMap
+): Map<number, ResolvedMatch> => resolveInternal(matches, picks, false).resolved;
+
+export const setPick = (
+  matches: Match[],
+  picks: PicksMap,
+  lid: number,
+  pickedTeamId: string
+): PicksMap =>
+  resolveInternal(
+    matches,
+    { ...picks, [String(lid)]: pickedTeamId },
+    true
+  ).picks;
+
+export const isPredictionComplete = (
+  matches: Match[],
+  picks: PicksMap
+): boolean => {
+  const resolved = resolvePredictedBracket(matches, picks);
+  return getPickableMatches(matches, picks).every(
+    (match) => resolved.get(match.lid)?.pickedWinnerId
+  );
+};
+
+export const getMatchLabel = (matches: Match[], match: Match): string => {
+  if (match.reset) return "Bracket Reset";
+
+  const winners = matches.filter(
+    (m) => isBracketMatch(m) && !m.reset && !m.is_losers_bracket
+  );
+  const grandFinal = winners.reduce(
+    (highest: Match | undefined, current) =>
+      !highest || current.lid > highest.lid ? current : highest,
+    undefined
+  );
+  if (!grandFinal) return `Match ${match.order}`;
+
+  const hasLosersBracket = matches.some(
+    (m) => isBracketMatch(m) && m.is_losers_bracket
+  );
+
+  if (match.lid === grandFinal.lid) return "Final";
+  if (
+    hasLosersBracket &&
+    !match.is_losers_bracket &&
+    grandFinal.home_from_lid === match.lid
+  ) {
+    return "Winners Bracket Final";
+  }
+  if (match.is_losers_bracket && grandFinal.away_from_lid === match.lid) {
+    return "Losers Bracket Final";
+  }
+  return `Match ${match.order}`;
+};
+
+export type PickResult = "correct" | "incorrect" | "pending";
+
+export interface PredictionScore {
+  points: number;
+  correct: number;
+  total: number;
+  perMatch: Map<number, PickResult>;
+  predictedChampionId?: string;
+}
+
+export const getMatchPoints = (match: Match): number =>
+  (match.is_losers_bracket ? 5 : 10) * 2 ** match.round;
+
+export const computePredictionScore = (
+  matches: Match[],
+  picks: PicksMap
+): PredictionScore => {
+  const pickable = getPickableMatches(matches, picks);
+  const perMatch = new Map<number, PickResult>();
+
+  let points = 0;
+  let correct = 0;
+
+  for (const match of pickable) {
+    const pickId = picks[String(match.lid)];
+
+    if (match.status !== "ended") {
+      perMatch.set(match.lid, "pending");
+      continue;
+    }
+
+    const actualWinnerId =
+      match.home_cups > match.away_cups ? teamId(match.home) : teamId(match.away);
+
+    if (pickId && actualWinnerId && pickId === actualWinnerId) {
+      perMatch.set(match.lid, "correct");
+      points += getMatchPoints(match);
+      correct += 1;
+    } else {
+      perMatch.set(match.lid, "incorrect");
+    }
+  }
+
+  const grandFinal = pickable
+    .filter((match) => !match.is_losers_bracket)
+    .at(-1);
+
+  return {
+    points,
+    correct,
+    total: pickable.length,
+    perMatch,
+    predictedChampionId: grandFinal
+      ? picks[String(grandFinal.lid)]
+      : undefined,
+  };
+};

src/features/tournaments/components/started-tournament/index.tsx

@@ -6,6 +6,10 @@ import { Carousel } from "@mantine/carousel";
 import carouselClasses from "./carousel.module.css";
 import ListLink from "@/components/list-link";
 import { TreeStructureIcon, UsersIcon, ClockIcon, ListDashes } from "@phosphor-icons/react";
+import WizardOrbIcon from "@/components/wizard-orb-icon";
+import { isPredictionLocked, isTournamentPredictable } from "@/features/predictions/utils";
+import { predictionQueries } from "@/features/predictions/queries";
+import { useServerQuery } from "@/lib/tanstack-query/hooks";
 import TeamListButton from "../upcoming-tournament/team-list-button";
 import RulesListButton from "../upcoming-tournament/rules-list-button";
 import MatchCard from "@/features/matches/components/match-card";
@@ -42,6 +46,22 @@ const StartedTournament: React.FC<{ tournament: Tournament }> = ({
     return tournament.matches?.some((match) => match.round === -1) || false;
   }, [tournament.matches]);
 
+  const isPredictable = useMemo(
+    () => isTournamentPredictable(tournament),
+    [tournament]
+  );
+
+  const predictionsLocked = useMemo(
+    () => isPredictionLocked(tournament.matches || []),
+    [tournament.matches]
+  );
+
+  const { data: myPrediction } = useServerQuery({
+    ...predictionQueries.mine(tournament.id),
+    options: { enabled: isPredictable && !predictionsLocked },
+  });
+  const hasSubmitted = !!myPrediction?.prediction;
+
   return (
     <Stack gap="lg">
       <Header tournament={tournament} />
@@ -117,6 +137,20 @@ const StartedTournament: React.FC<{ tournament: Tournament }> = ({
           to={`/tournaments/${tournament.id}/bracket`}
           Icon={TreeStructureIcon}
         />
+        {isPredictable && !predictionsLocked && (
+          <ListLink
+            label={hasSubmitted ? `Edit Your Prediction` : `Make Your Prediction`}
+            to={`/tournaments/${tournament.id}/predictions/make`}
+            Icon={WizardOrbIcon}
+          />
+        )}
+        {isPredictable && (predictionsLocked || hasSubmitted) && (
+          <ListLink
+            label={`View Predictions`}
+            to={`/tournaments/${tournament.id}/predictions`}
+            Icon={WizardOrbIcon}
+          />
+        )}
         <TeamListButton teams={tournament.teams || []} isRegional={tournament.regional} />
         <RulesListButton tournamentId={tournament.id} />
       </Box>

src/features/tournaments/components/tournament-stats.tsx

@@ -13,8 +13,10 @@ import {
 } from "@mantine/core";
 import { Tournament } from "@/features/tournaments/types";
 import { CrownIcon, TreeStructureIcon, InfoIcon, ListDashes } from "@phosphor-icons/react";
+import WizardOrbIcon from "@/components/wizard-orb-icon";
 import TeamAvatar from "@/components/team-avatar";
 import ListLink from "@/components/list-link";
+import { isTournamentPredictable } from "@/features/predictions/utils";
 import { Podium } from "./podium";
 
 interface TournamentStatsProps {
@@ -185,6 +187,13 @@ export const TournamentStats = memo(({ tournament }: TournamentStatsProps) => {
           to={`/tournaments/${tournament.id}/bracket`}
           Icon={TreeStructureIcon}
         />
+        {isTournamentPredictable(tournament) && (
+          <ListLink
+            label={`View Predictions`}
+            to={`/tournaments/${tournament.id}/predictions`}
+            Icon={WizardOrbIcon}
+          />
+        )}
         {renderTeamStatsTable()}
       </Stack>
     </Container>

src/hooks/use-server-events.ts

@@ -4,6 +4,7 @@ import { Logger } from "@/lib/logger";
 import { useAuth } from "@/contexts/auth-context";
 import { tournamentKeys } from "@/features/tournaments/queries";
 import { reactionKeys } from "@/features/reactions/queries";
+import { predictionKeys } from "@/features/predictions/queries";
 
 const logger = new Logger('ServerEvents');
 
@@ -54,6 +55,7 @@ const eventHandlers: Record<string, EventHandler> = {
   "match": (event, queryClient) => {
     debouncedInvalidate(queryClient, { queryKey: tournamentKeys.details(event.tournamentId) });
     debouncedInvalidate(queryClient, { queryKey: tournamentKeys.current });
+    debouncedInvalidate(queryClient, { queryKey: predictionKeys.tournament(event.tournamentId) });
     debouncedInvalidate(queryClient, { queryKey: ['players', 'stats'] });
     debouncedInvalidate(queryClient, { queryKey: ['players', 'matches'] });
     debouncedInvalidate(queryClient, { queryKey: ['players', 'activity'] });

src/lib/pocketbase/client.ts

@@ -7,6 +7,7 @@ import { createReactionsService } from "./services/reactions";
 import { createActivitiesService } from "./services/activities";
 import { createBadgesService } from "./services/badges";
 import { createGroupsService } from "./services/groups";
+import { createPredictionsService } from "./services/predictions";
 
 class PocketBaseAdminClient {
   private pb: PocketBase;
@@ -48,6 +49,7 @@ class PocketBaseAdminClient {
     Object.assign(this, createActivitiesService(this.pb));
     Object.assign(this, createBadgesService(this.pb));
     Object.assign(this, createGroupsService(this.pb));
+    Object.assign(this, createPredictionsService(this.pb));
 
     this.authPromise = this.authenticate();
     this.authPromise.then(() => {
@@ -126,7 +128,8 @@ interface AdminClient
     ReturnType<typeof createReactionsService>,
     ReturnType<typeof createActivitiesService>,
     ReturnType<typeof createBadgesService>,
-    ReturnType<typeof createGroupsService> {
+    ReturnType<typeof createGroupsService>,
+    ReturnType<typeof createPredictionsService> {
   authPromise: Promise<void>;
 }
 

src/lib/pocketbase/services/predictions.ts

@@ -0,0 +1,68 @@
+import PocketBase from "pocketbase";
+import { PicksMap, Prediction } from "@/features/predictions/types";
+import { transformPrediction } from "../util/transform-types";
+
+export function createPredictionsService(pb: PocketBase) {
+  return {
+    async getPrediction(
+      tournamentId: string,
+      playerId: string
+    ): Promise<Prediction | null> {
+      try {
+        const record = await pb
+          .collection("predictions")
+          .getFirstListItem(
+            `tournament="${tournamentId}" && player="${playerId}"`,
+            { expand: "player" }
+          );
+        return transformPrediction(record);
+      } catch (error) {
+        return null;
+      }
+    },
+
+    async getPredictionsForTournament(
+      tournamentId: string
+    ): Promise<Prediction[]> {
+      const records = await pb.collection("predictions").getFullList({
+        filter: `tournament="${tournamentId}"`,
+        expand: "player",
+        sort: "updated",
+      });
+      return records.map(transformPrediction);
+    },
+
+    async upsertPrediction(
+      tournamentId: string,
+      playerId: string,
+      picks: PicksMap
+    ): Promise<Prediction> {
+      const existing = await this.getPrediction(tournamentId, playerId);
+
+      const record = existing
+        ? await pb
+            .collection("predictions")
+            .update(existing.id, { picks }, { expand: "player" })
+        : await pb.collection("predictions").create(
+            {
+              tournament: tournamentId,
+              player: playerId,
+              picks,
+            },
+            { expand: "player" }
+          );
+
+      return transformPrediction(record);
+    },
+
+    async deletePredictionsForTournament(tournamentId: string): Promise<void> {
+      const records = await pb.collection("predictions").getFullList({
+        filter: `tournament="${tournamentId}"`,
+        fields: "id",
+      });
+      for (const record of records) {
+        await pb.collection("predictions").delete(record.id);
+      }
+    },
+  };
+}

src/lib/pocketbase/util/transform-types.ts

@@ -3,6 +3,7 @@ import { Player, PlayerInfo } from "@/features/players/types";
 import { Team, TeamInfo } from "@/features/teams/types";
 import { Tournament, TournamentInfo } from "@/features/tournaments/types";
 import { Badge, BadgeInfo, BadgeProgress, EarnedBadge } from "@/features/badges/types";
+import { Prediction } from "@/features/predictions/types";
 import { Activity } from "../services/activities";
 
 // pocketbase does this weird thing with relations where it puts them under a seperate "expand" field
@@ -295,6 +296,17 @@ export function transformReaction(record: any) {
   };
 }
 
+export function transformPrediction(record: any): Prediction {
+  return {
+    id: record.id,
+    tournament: record.tournament,
+    player: transformPlayerInfo(record.expand?.player ?? { id: record.player }),
+    picks: record.picks || {},
+    created: record.created,
+    updated: record.updated,
+  };
+}
+
 export function transformBadgeInfo(record: any): BadgeInfo {
   return {
     id: record.id,