Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments?format=api&ordering=-id&page=4963
{ "count": 59214, "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=-id&page=4964", "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-id&page=4962", "results": [ { "id": 18044, "name": "Blitz 13x13 Swiss Tournament 2016-06-06 19:30", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/1dff84686f829e8ef90e2e123f1baddf?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1125.8827017028436, "deviation": 78.19731452501959, "volatility": 0.06006087171771568 } }, "ranking": 17.66169912212786, "professional": false, "ui_class": "supporter moderator admin" }, "description": "Automatic Sitewide Tournament", "schedule": { "id": 3, "name": "Blitz 13x13 Swiss Tournament", "rrule": "DTSTART:20260403T030000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:27:45.234995Z", "last_run": "2026-04-03T03:00:15.366759Z", "lead_time_seconds": 1800, "tournament_type": 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Double Elimination Tournament 2016-06-06 14:30", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/1dff84686f829e8ef90e2e123f1baddf?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1125.8827017028436, "deviation": 78.19731452501959, "volatility": 0.06006087171771568 } }, "ranking": 17.66169912212786, "professional": false, "ui_class": "supporter moderator admin" }, "description": "Automatic Sitewide Tournament", "schedule": { "id": 2, "name": "Live 9x9 Double Elimination Tournament", "rrule": "DTSTART:20260403T020000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:22:51.496184Z", "last_run": "2026-04-03T02:00:15.369999Z", "lead_time_seconds": 1800, "tournament_type": "double_elimination", "handicap": 0, "rules": "japanese", "size": 9, "time_control_parameters": { "time_control": "byoyomi", "period_time": 30, "main_time": 300, "periods": 3 }, "min_ranking": 0, "max_ranking": 36, 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"board_size": 9, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_9.png", "player_count": 5, "ranked": true }, { "id": 18036, "name": "1st Monthly Vanilla cup - Queen's Round", "director": { "id": 313632, "username": "AtariTime", "country": "un", "icon": "https://user-uploads.online-go.com/86c18b2d06178a83c364e700a68a7179-64.png", "ratings": { "version": 5, "overall": { "rating": 1025.6217318681754, "deviation": 61.71658235558162, "volatility": 0.06005974607211303 } }, "ranking": 15.502536695610152, "professional": false, "ui_class": "" }, "description": "First Monthly tournament! Restricted to group members only, non-provisional players, level under 20kyu. Members owning a weekly gold cup can't join more than a single monthly round per month. 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Restricted to group members only, non-provisional players, level under 20kyu.\n*Members owning a weekly gold cup can't join more than a single monthly round per month.*\n**Good luck members!**", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "japanese", "time_per_move": 36, "time_control_parameters": { "time_control": "byoyomi", "period_time": 30, "main_time": 600, "periods": 3 }, "is_open": true, "exclude_provisional": true, "group": { "id": 1118, "name": "The Vanilla Cups", "summary": "For beginner players (25k-20k): tournaments, strategies & tips, friendly matches...", "require_invitation": false, "is_public": false, "admin_only_tournaments": false, "hide_details": true, "member_count": 46, "icon": "https://user-uploads.online-go.com/6045359e14a7f4da55c9df5bdd94b41c-64.png" }, "auto_start_on_max": false, "time_start": "2016-06-12T11:30:00Z", "players_start": 4, "first_pairing_method": "strength", "subsequent_pairing_method": 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