Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments?format=api&ordering=-board_size&page=5813
{ "count": 59456, "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=5814", "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=5812", "results": [ { "id": 363, "name": "The fourth", "director": { "id": 10173, "username": "Hneite", "country": "no", "icon": "https://secure.gravatar.com/avatar/8b1bfb226de3b056ac91a41ef429776f?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1531.458160512167, "deviation": 64.5972667044223, "volatility": 0.06013009007133473 } }, "ranking": 24.78386551408993, "professional": false, "ui_class": "" }, "description": "", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 86400, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "max_time": 432000, "time_increment": 86400 }, "is_open": true, "exclude_provisional": false, "group": { "id": 78, "name": "OGS Mini Tournaments", 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"2015-02-20T05:56:18.340749Z", "last_run": "2026-04-23T19:00:17.022742Z", "lead_time_seconds": 86400, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "size": 9, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "pause_on_weekends": true, "max_time": 259200, "time_increment": 86400 }, "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclude_provisional": true, "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "settings": { "num_rounds": "3", "upper_bar": "20", "lower_bar": "10", "group_size": "3", "maximum_players": 10 }, "next_run": "2026-04-26T19:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 89280, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "pause_on_weekends": true, "max_time": 259200, "time_increment": 86400 }, "is_open": true, "exclude_provisional": true, "group": null, "auto_start_on_max": false, "time_start": "2021-07-01T19:00:10.452936Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2021-07-01T19:00:17.234928Z", "ended": "2021-07-17T13:28:20.715094Z", "start_waiting": "2021-07-01T19:00:16.734660Z", "board_size": 9, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_9.png", "player_count": 7, "ranked": true }, { "id": 76477, "name": "Live 9x9 Double Elimination Tournament 2021-06-18 18:30", "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, 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true, "players_start": 4, "first_pairing_method": "slide", "subsequent_pairing_method": "slide", "settings": { "num_rounds": "3", "upper_bar": "20", "lower_bar": "10", "group_size": "3", "maximum_players": 100 }, "next_run": "2026-04-25T02:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "japanese", "time_per_move": 33, "time_control_parameters": { "time_control": "byoyomi", "period_time": 30, "main_time": 300, "periods": 3 }, "is_open": true, "exclude_provisional": true, "group": null, "auto_start_on_max": false, "time_start": "2021-06-21T18:30:36.337094Z", "players_start": 4, "first_pairing_method": "slide", "subsequent_pairing_method": "slide", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2021-06-21T18:30:37.861181Z", "ended": "2021-06-21T19:18:03.788682Z", "start_waiting": "2021-06-21T18:30:37.586919Z", "board_size": 9, "active_round": null, "icon": 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"max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2007-07-15T15:27:00Z", "ended": "2007-09-01T17:46:00Z", "start_waiting": null, "board_size": 9, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg", "player_count": 0, "ranked": true }, { "id": 266, "name": "New players.", "director": { "id": 10642, "username": "NoScore", "country": "us", "icon": "https://secure.gravatar.com/avatar/b372af8571a3653efd0d3324a761486d?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1291.1101396042034, "deviation": 67.62339703598686, "volatility": 0.06000042351282349 } }, "ranking": 20.831745990157398, "professional": false, "ui_class": "" }, "description": "", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "chinese", "time_per_move": 86400, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "max_time": 604800, "time_increment": 86400 }, "is_open": true, 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