Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments?format=api&ordering=-first_pairing_method&page=4977
{ "count": 59227, "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=-first_pairing_method&page=4978", "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-first_pairing_method&page=4976", "results": [ { "id": 102255, "name": "HAPPY GO #19 Double Elimination", "director": { "id": 1220803, "username": "nobhaete", "country": "cn", "icon": "https://user-uploads.online-go.com/1565c13b341c9b8bea6066bd85481ee6-64.png", "ratings": { "version": 5, "overall": { "rating": 1881.396246193039, "deviation": 73.36196889093854, "volatility": 0.05983719131855313 } }, "ranking": 29.547993319915427, "professional": false, "ui_class": "" }, "description": "1 day/step, welcome and have fun!\n\nPAUSE/ VACATION = DISQUALIFIED! If your opponent pauses or has a vacation, or you have any question, please contact nobhaete.\n\nDouble elimination tournament every Sunday.", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "chinese", "time_per_move": 86400, "time_control_parameters": { "system": "simple", "time_control": "simple", "speed": "correspondence", "pause_on_weekends": false, "per_move": 86400 }, "is_open": true, "exclude_provisional": false, "group": { "id": 12619, "name": "Happy Go!!!", "summary": "Feel free to join and create tournaments!\nCreate tournaments = admin\n\nDouble Elimination tournaments every Sunday \nSingle Elimination tournaments every Thursday & Monday\n\nSimul McMahon tournaments first day of every month\n\nsdk and ddk on 1st of every tw", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 70, "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-64.png" }, "auto_start_on_max": false, "time_start": "2023-04-23T04:00:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "random", "min_ranking": 5, "max_ranking": 32, "analysis_enabled": true, "exclusivity": "open", "started": "2023-04-23T04:00:00.201023Z", "ended": "2023-07-21T07:42:41.817150Z", "start_waiting": "2023-04-23T04:00:00.074201Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-15.png", "player_count": 7, "ranked": true }, { "id": 48530, "name": "Blitz 13x13 Swiss Tournament 2019-05-18 15:30", "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:20260404T030000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:27:45.234995Z", "last_run": "2026-04-04T03:00:16.521526Z", "lead_time_seconds": 1800, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "size": 13, "time_control_parameters": { "time_control": "byoyomi", "period_time": 10, "main_time": 300, "periods": 5 }, "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclude_provisional": true, "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "settings": { "num_rounds": "3", "upper_bar": "20", "lower_bar": "10", "group_size": "3", "maximum_players": 40 }, "next_run": "2026-04-04T07:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "time_per_move": 13, "time_control_parameters": { "time_control": "byoyomi", "period_time": 10, "main_time": 300, "periods": 5 }, "is_open": true, "exclude_provisional": true, "group": null, "auto_start_on_max": false, "time_start": "2019-05-18T15:30:35.021146Z", "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2019-05-18T15:30:51.680430Z", "ended": "2019-05-18T16:04:39.300919Z", "start_waiting": "2019-05-18T15:30:51.027864Z", "board_size": 13, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_13.png", "player_count": 9, "ranked": true }, { "id": 131045, "name": "Live 19x19 Swiss Tournament 2025-08-02 16:30", "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 Site-wide Tournament", "schedule": { "id": 4, "name": "Live 19x19 Swiss Tournament", "rrule": "DTSTART:20260404T040000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:30:39.250689Z", "last_run": "2026-04-04T04:00:16.534590Z", "lead_time_seconds": 1800, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "size": 19, "time_control_parameters": { "time_control": "byoyomi", "period_time": 30, "main_time": 600, "periods": 3 }, "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclude_provisional": true, "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "settings": { "num_rounds": "3", "upper_bar": "20", "lower_bar": "10", "group_size": "3", "maximum_players": 40 }, "next_run": "2026-04-04T08:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "time_per_move": 35, "time_control_parameters": { "time_control": "byoyomi", "period_time": 30, "main_time": 600, "periods": 3 }, "is_open": true, "exclude_provisional": true, "group": null, "auto_start_on_max": false, "time_start": "2025-08-02T16:30:51.591436Z", "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2025-08-02T16:31:51.682988Z", "ended": "2025-08-02T17:59:01.840396Z", "start_waiting": "2025-08-02T16:31:51.603761Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png", "player_count": 7, "ranked": true }, { "id": 91435, "name": "14th SDK DDK Ultra Fast Handicap", "director": { "id": 886972, "username": "Babbo Bruno", "country": "us", "icon": "https://user-uploads.online-go.com/3a86884a3c89d9e4d9b53b217b0675cf-64.png", "ratings": { "version": 5, "overall": { "rating": 1044.8015988802445, "deviation": 65.17373548663942, "volatility": 0.059798308972426856 } }, "ranking": 15.931460207715245, "professional": false, "ui_class": "supporter" }, "description": "Note the aggressive time requirements, you must average 6 moves per day.\nThis is a handicap game with random matching, prepare to fight.", "schedule": null, "title": null, "tournament_type": "elimination", "handicap": -1, "rules": "japanese", "time_per_move": 17280, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": false, "time_increment": 14400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 508, "name": "Fast Correspondence", "summary": "Tournaments for people who like to play quick correspondence games.", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 819, "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-64.png" }, "auto_start_on_max": true, "time_start": "2022-06-22T12:00:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "random", "min_ranking": 10, "max_ranking": 29, "analysis_enabled": true, "exclusivity": "open", "started": "2022-06-22T12:00:19.923144Z", "ended": "2022-09-06T21:33:39.120499Z", "start_waiting": "2022-06-22T12:00:19.785366Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-15.png", "player_count": 10, "ranked": true }, { "id": 92619, "name": "Live 19x19 Swiss Tournament 2022-07-20 00:30", "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": 4, "name": "Live 19x19 Swiss Tournament", "rrule": "DTSTART:20260404T040000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:30:39.250689Z", "last_run": "2026-04-04T04:00:16.534590Z", "lead_time_seconds": 1800, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "size": 19, "time_control_parameters": { "time_control": "byoyomi", "period_time": 30, "main_time": 600, "periods": 3 }, "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclude_provisional": true, "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "settings": { "num_rounds": "3", "upper_bar": "20", "lower_bar": "10", "group_size": "3", "maximum_players": 40 }, "next_run": "2026-04-04T08:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "swiss", "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": null, "auto_start_on_max": false, "time_start": "2022-07-20T00:30:22.323666Z", "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2022-07-20T00:30:23.734372Z", "ended": "2022-07-20T02:22:59.611479Z", "start_waiting": "2022-07-20T00:30:23.561602Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png", "player_count": 9, "ranked": true }, { "id": 114699, "name": "Correspondence Weekly McMahon 19x19 2024-04-13 17:00", "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 Site-wide Tournament", "schedule": { "id": 9, "name": "Correspondence Weekly McMahon 19x19", "rrule": "DTSTART:20260330T170000Z\nRRULE:FREQ=WEEKLY", "active": true, "created": "2015-12-16T02:22:56.480465Z", "last_run": "2026-03-30T17:00:11.602788Z", "lead_time_seconds": 432000, "tournament_type": "s_mcmahon", "handicap": 0, "rules": "japanese", "size": 19, "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": 10, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "settings": { "num_rounds": 3, "upper_bar": "25", "lower_bar": "15", "group_size": 4, "maximum_players": 1000 }, "next_run": "2026-04-06T17:00:00Z", "base_points": "30.0" }, "title": null, "tournament_type": "s_mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 88451, "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": "2024-04-13T17:00:44.432270Z", "players_start": 10, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2024-04-13T17:00:55.702409Z", "ended": "2025-07-27T10:58:20.772908Z", "start_waiting": "2024-04-13T17:00:54.531576Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png", "player_count": 19, "ranked": true }, { "id": 91628, "name": "Alan Turing Nines Title Tournament 2022", "director": { "id": 40318, "username": "gamesorry", "country": "cn", "icon": "https://secure.gravatar.com/avatar/801cba34b77e0105326c402cc482cb09?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 2004.4188438214221, "deviation": 67.71437067217448, "volatility": 0.06015576961047741 } }, "ranking": 31.014313855840236, "professional": false, "ui_class": "supporter" }, "description": "Alan Turing Nines Title Tournament 2022\n\nTitle Holder:\n<a style=\"color:orange\" href='https://online-go.com/player/43936/'>Sadaharu [Nines Alan Turing]</a>\n\nHall of Fame:\n<table style=\"text-align:center;border:1px solid\">\n<tr>\n\t<th style=\"border:1px solid\">Year</th>\n\t<th style=\"border:1px solid\">Title Match Winner</th>\n\t<th style=\"border:1px solid\">Score</th>\n\t<th style=\"border:1px solid\">Title Match Runner-up</th>\n\t<th style=\"border:1px solid\">\n\tTitle Tournament Winner\n\t\t<img src='https://a00ce0086bda2213e89f-570db0116da8eb5fdc3ce95006e46d28.ssl.cf1.rackcdn.com/4.2/img/trophies/gold_title_9.png' alt='Gold'></img>\n\t</th>\n\t<th style=\"border:1px solid\">\n\t\tTitle Tournament Runner-up\n\t\t<img src='https://a00ce0086bda2213e89f-570db0116da8eb5fdc3ce95006e46d28.ssl.cf1.rackcdn.com/4.2/img/trophies/silver_title_9.png' alt='Silver'></img>\n\t</th>\n\t<th style=\"border:1px solid\">\n\t\tTitle Tournament 3rd Place\n\t<img src='https://a00ce0086bda2213e89f-570db0116da8eb5fdc3ce95006e46d28.ssl.cf1.rackcdn.com/4.2/img/trophies/bronze_title_9.png' alt='Bronze'></img>\n\t</th>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/2448'>2010</a></td>\n\t<td><b>Aloril</b></td><td></td><td></td>\n\t<td><b>Aloril (3d)</b></td><td>vitality (5d)</td><td>KlausP (3d)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/2452'>2011</a></td>\n\t<td><b>Valkyria9</b></td><td><a href='https://online-go.com/tournament/2542'>5-0</a></td><td>Aloril</td>\n\t<td><b>Valkyria9 (4d)</b></td><td>zealot (3d)</td><td>devariot (1k)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/2470'>2012</a></td>\n\t<td><b>Valkyria9</b></td><td><a href='https://online-go.com/tournament/2555'>1-0</a></td><td>pollemand</td>\n\t<td><b>Valkyria9 (4d)</b></td><td>pollemand (3d)</td><td>Aloril (3d)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/6300'>2015</a></td>\n\t<td><b>Valkyria9</b></td><td>3-2</td><td>mark5000</td>\n\t<td><b>Valkyria9 (4d)</b></td><td>mark5000 (2d)</td><td>Sadaharu (5d)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/17053'>2016</a></td>\n\t<td><b>Valkyria9</b></td><td>4-1</td><td>mark5000</td>\n\t<td><b>Valkyria9 (4d)</b></td><td>mark5000 (2d)</td><td>Sofiam (4k)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/26617'>2017</a></td>\n\t<td><b>mark5000</b></td><td>3-2</td><td>Valkyria9</td>\n\t<td><b>Valkyria9 (7d)</b></td><td>mark5000 (6d)</td><td># (5d)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/37846'>2018</a></td>\n\t<td><b>Deep Scholar</b></td>\n\t<td><a href='https://online-go.com/game/18900734'>5-0</a></td>\n\t<td>mark5000</td>\n\t<td><b>Deep Scholar (9d)</b></td><td>Sadaharu (9d)</td><td>Valkyria9 (7d)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/49196'>2019</a></td>\n\t<td><b>Sadaharu</b></td><td><a href='https://online-go.com/tournament/73604'>4-1</a></td><td>Deep Scholar</td>\n\t<td><b>Sadaharu (9d)</b></td><td>earlgreyhot (9d)</td><td>martin3141 (4d)</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/60660'>2020</a></td>\n\t<td>TBA: Sadaharu</td><td>vs</td><td>mark5000</td>\n\t<td><b>mark5000 [6d]</b></td><td>nutpenAI [6d]</td><td>spicydragon [5d]</td>\n</tr>\n<tr>\n\t<td><a href='https://online-go.com/tournament/73880'>2021</a></td>\n\t<td></td><td></td><td></td>\n\t<td><b>Deep Scholar [7d]</b></td><td>KataGo-Strong [9d+]</td><td>Tenebris [2d]</td>\n</tr>\n</table>\n\nNotes: \n- The starting time on this page is an approximation and subject to change. It will be finalized once the announcement is posted in <a href='https://online-go.com/group/515'>OGS Title Tournaments</a> group and <a href='https://forums.online-go.com/t/title-tournament-announcements/10408/'>Title Tournament Announcement</a>.\n- Old OGS ranks are displayed for tournaments before 2017. \n- Bots and use of AI are allowed in Alan Turing tournaments.", "schedule": null, "title": null, "tournament_type": "s_mcmahon", "handicap": 0, "rules": "chinese", "time_per_move": 93120, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": true, "time_increment": 86400, "initial_time": 604800, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 515, "name": "OGS Title Tournaments", "summary": "Would you like to compete with hundreds of players in epic tournaments and become the Honinbo, Meijin, Kisei, Tianyuan, Mingren or Kuksu? 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