diff --git a/server/src/db/schema.ts b/server/src/db/schema.ts
index 9bb9c8f..2f61691 100644
--- a/server/src/db/schema.ts
+++ b/server/src/db/schema.ts
@@ -109,3 +109,39 @@ export const bets = sqliteTable('bets', {
   createdAt: text('created_at').notNull(),
   settledAt: text('settled_at'),
 })
+
+export const tournaments = sqliteTable('tournaments', {
+  id: text('id').primaryKey(),
+  name: text('name').notNull(),
+  format: text('format', { enum: ['single_elim', 'round_robin'] }).notNull(),
+  size: integer('size').notNull(),
+  entrySats: integer('entry_sats').notNull().default(0),
+  prizeSats: integer('prize_sats').notNull().default(0),
+  status: text('status', { enum: ['open', 'active', 'finished'] }).notNull().default('open'),
+  currentRound: integer('current_round').notNull().default(0),
+  seasonId: text('season_id'),
+  createdAt: text('created_at').notNull(),
+  startedAt: text('started_at'),
+  finishedAt: text('finished_at'),
+})
+
+export const tournamentEntries = sqliteTable('tournament_entries', {
+  id: text('id').primaryKey(),
+  tournamentId: text('tournament_id').notNull().references(() => tournaments.id),
+  botId: text('bot_id').notNull().references(() => bots.id),
+  seed: integer('seed').notNull().default(0),
+  eliminated: integer('eliminated', { mode: 'boolean' }).notNull().default(false),
+  createdAt: text('created_at').notNull(),
+})
+
+export const tournamentMatches = sqliteTable('tournament_matches', {
+  id: text('id').primaryKey(),
+  tournamentId: text('tournament_id').notNull().references(() => tournaments.id),
+  round: integer('round').notNull(),
+  matchIndex: integer('match_index').notNull(),
+  botAId: text('bot_a_id').references(() => bots.id),
+  botBId: text('bot_b_id').references(() => bots.id),
+  fightId: text('fight_id').references(() => fights.id),
+  winnerId: text('winner_id').references(() => bots.id),
+  status: text('status', { enum: ['pending', 'live', 'finished'] }).notNull().default('pending'),
+})
diff --git a/server/src/db/startup.ts b/server/src/db/startup.ts
index 00f09a3..b012cd0 100644
--- a/server/src/db/startup.ts
+++ b/server/src/db/startup.ts
@@ -1,4 +1,5 @@
 import { sqlite } from './index.js'
+import { logger } from '../lib/logger.js'
 
 export function runMigrations() {
   sqlite.exec(`
@@ -86,6 +87,45 @@ export function runMigrations() {
     );
   `)
 
+
+  sqlite.exec(`
+    CREATE TABLE IF NOT EXISTS tournaments (
+      id TEXT PRIMARY KEY,
+      name TEXT NOT NULL,
+      format TEXT NOT NULL DEFAULT 'single_elim',
+      size INTEGER NOT NULL,
+      entry_sats INTEGER NOT NULL DEFAULT 0,
+      prize_sats INTEGER NOT NULL DEFAULT 0,
+      status TEXT NOT NULL DEFAULT 'open',
+      current_round INTEGER NOT NULL DEFAULT 0,
+      season_id TEXT,
+      created_at TEXT NOT NULL,
+      started_at TEXT,
+      finished_at TEXT
+    );
+
+    CREATE TABLE IF NOT EXISTS tournament_entries (
+      id TEXT PRIMARY KEY,
+      tournament_id TEXT NOT NULL REFERENCES tournaments(id),
+      bot_id TEXT NOT NULL REFERENCES bots(id),
+      seed INTEGER NOT NULL DEFAULT 0,
+      eliminated INTEGER NOT NULL DEFAULT 0,
+      created_at TEXT NOT NULL
+    );
+
+    CREATE TABLE IF NOT EXISTS tournament_matches (
+      id TEXT PRIMARY KEY,
+      tournament_id TEXT NOT NULL REFERENCES tournaments(id),
+      round INTEGER NOT NULL,
+      match_index INTEGER NOT NULL,
+      bot_a_id TEXT REFERENCES bots(id),
+      bot_b_id TEXT REFERENCES bots(id),
+      fight_id TEXT REFERENCES fights(id),
+      winner_id TEXT REFERENCES bots(id),
+      status TEXT NOT NULL DEFAULT 'pending'
+    );
+  `)
+
   // Column migrations for existing databases
   const migrations = [
     "ALTER TABLE bots ADD COLUMN archetype TEXT NOT NULL DEFAULT 'standard'",
@@ -120,5 +160,5 @@ export function runMigrations() {
     sqlite.exec("UPDATE bots SET bot_type = 'classic' WHERE webhook_url LIKE 'http://classic.local%' AND bot_type = 'regular'")
   } catch { /* ok */ }
 
-  console.log('[botfights] database migrated')
+  logger.info('db', 'database migrated')
 }