Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments/?format=api&ordering=-board_size&page=3171
{ "count": 59730, "next": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-board_size&page=3172", "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-board_size&page=3170", "results": [ { "id": 28980, "name": "Correspondence 13x13 RoundRobin 2017-07-30 01:00", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?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": 7, "name": "Correspondence 13x13 RoundRobin", "rrule": "DTSTART:20260522T190000Z\nRRULE:FREQ=DAILY;INTERVAL=3", "active": true, "created": "2015-02-20T06:00:14.582400Z", "last_run": "2026-05-22T19:00:16.590557Z", "lead_time_seconds": 86400, 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Participants dont have to play their games immediately and are allowed to pause them, but are expected to arrange a time for their game and play it in the near future (next month or so).\nHave fun!", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 126, "time_control_parameters": { "period_time": 120, "main_time": 600, "system": "byoyomi", "pause_on_weekends": false, "time_control": "byoyomi", "periods": 5, "speed": "live" }, "is_open": true, "exclude_provisional": true, "group": { "id": 1534, "name": "OneColorGo-Group", "summary": "You are all welcome! :D", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 47, "icon": "https://user-uploads.online-go.com/932ea2aa1a94da488c92133f7f268199-64.png" }, "auto_start_on_max": false, "time_start": "2017-04-22T17:00:00Z", "players_start": 4, "first_pairing_method": "slide", "subsequent_pairing_method": 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null, "auto_start_on_max": false, "time_start": "2018-05-21T19:30:34.810941Z", "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2018-05-21T19:30:37.291598Z", "ended": "2018-05-21T20:15:48.704917Z", "start_waiting": "2018-05-21T19:30:36.627957Z", "board_size": 13, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_13.png", "player_count": 6, "ranked": true }, { "id": 29154, "name": "first coffee milk tournament even tho theres 2 people in da group:)", "director": { "id": 461233, "username": "hikarubae69", "country": "nz", "icon": "https://user-uploads.online-go.com/3bfeaa88322d565522fd9a3843592b7f-64.png", "ratings": { "version": 5, "overall": { "rating": 1134.1062328404655, "deviation": 65.49472239492376, "volatility": 0.060009140501091886 } }, "ranking": 17.8301739169829, "professional": false, "ui_class": "" 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"2017-09-18T17:24:30.958935Z", "start_waiting": "2017-09-18T15:52:19.597018Z", "board_size": 13, "active_round": null, "icon": "https://user-uploads.online-go.com/bc5ad85082c161635e562186adaf1f19-15.png", "player_count": 4, "ranked": true }, { "id": 29965, "name": "Correspondence 13x13 RoundRobin 2017-09-04 01:00", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?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": 7, "name": "Correspondence 13x13 RoundRobin", "rrule": "DTSTART:20260522T190000Z\nRRULE:FREQ=DAILY;INTERVAL=3", "active": true, "created": "2015-02-20T06:00:14.582400Z", "last_run": "2026-05-22T19:00:16.590557Z", 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