Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments?format=api&ordering=subsequent_pairing_method&page=1508
{ "count": 60699, "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=subsequent_pairing_method&page=1509", "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=subsequent_pairing_method&page=1507", "results": [ { "id": 6351, "name": "Correspondence 13x13 RoundRobin 2015-04-03 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:20260817T190000Z\nRRULE:FREQ=DAILY;INTERVAL=3", "active": true, "created": "2015-02-20T06:00:14.582400Z", "last_run": "2026-08-17T19:00:29.605367Z", "lead_time_seconds": 86400, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "size": 13, "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": "2026-08-20T19:00:00Z", "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, "max_time": 259200, "time_increment": 86400 }, "is_open": true, "exclude_provisional": true, "group": null, "auto_start_on_max": false, "time_start": "2015-04-03T01:00:48.080659Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2015-04-03T01:01:10.005771Z", "ended": "2015-05-05T02:18:25.267653Z", "start_waiting": "2015-04-03T01:01:08.950992Z", "board_size": 13, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_13.png", "player_count": 10, "ranked": true }, { "id": 137919, "name": "Handicap Arena 2026 - 018", "director": { "id": 526987, "username": "Gia", "country": "gr", "icon": "https://user-uploads.online-go.com/14567c9a0670b7d4a44606ba237f054d-64.png", "ratings": { "version": 5, "overall": { "rating": 1131.3390674606985, "deviation": 63.89894928210641, "volatility": 0.06006068621581099 } }, "ranking": 17.773619993220706, "professional": false, "ui_class": "supporter" }, "description": "Part of an arena tournament. For details, rules and arena-standings see the group page.\n\nThe tournament will start as soon as there are 5 players.", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": -1, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "time_increment": 86400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 13655, "name": "Handicap Arena", "summary": "Organising arena-type handicap correspondence tournaments.", "require_invitation": false, "is_public": true, "admin_only_tournaments": true, "hide_details": false, "member_count": 108, "icon": "https://user-uploads.online-go.com/5fe2ed1a16feb631d49732f2de506b9e-64.png" }, "auto_start_on_max": true, "time_start": "2026-03-06T17:00:00Z", "players_start": 5, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "open", "started": "2026-03-04T16:21:50.886828Z", "ended": "2026-05-25T02:09:27.135140Z", "start_waiting": "2026-03-04T16:21:50.591217Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/5fe2ed1a16feb631d49732f2de506b9e-15.png", "player_count": 5, "ranked": true }, { "id": 47307, "name": "第２期 ぺんぎんクラス【 楽人リーグ戦 】", "director": { "id": 582205, "username": "さかもと", "country": "jp", "icon": "https://user-uploads.online-go.com/a4fd22623c4d90b173eef890e634934d-64.png", "ratings": { "version": 5, "overall": { "rating": 1806.4877161432678, "deviation": 141.8396152914018, "volatility": 0.06002488366424099 } }, "ranking": 28.607415450972766, "professional": false, "ui_class": "" }, "description": "ぺんぎんクラス 対象棋力：１４級～１０級\n\n挨拶はしっかり！ マナーを守って楽しく対局しましょう！\n\n定員の１０名になりお申し込みができない場合は、 ４月２３日(火)１９時までに、トーナメント掲示板 あるいは グループ管理者にお知らせください。 ２回負け抜けトーナメントに変更いたします。", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 44160, "time_control_parameters": { "system": "fischer", "pause_on_weekends": true, "time_control": "fischer", "initial_time": 86400, "max_time": 172800, "time_increment": 43200, "speed": "correspondence" }, "is_open": true, "exclude_provisional": false, "group": { "id": 3048, "name": "【 公式 】楽人リーグ戦", "summary": "", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 36, "icon": "https://user-uploads.online-go.com/b602a3a4c62da69475b1f2bf4b93d4a1-64.png" }, "auto_start_on_max": false, "time_start": "2019-04-26T10:00:00Z", "players_start": 4, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 20, "analysis_enabled": true, "exclusivity": "open", "started": "2019-04-26T10:00:43.354741Z", "ended": "2019-06-14T15:02:12.116169Z", "start_waiting": "2019-04-26T10:00:42.805962Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/b602a3a4c62da69475b1f2bf4b93d4a1-15.png", "player_count": 4, "ranked": true }, { "id": 48401, "name": "Super Cup B Alma Pacifica", "director": { "id": 564933, "username": "Alma Confundida", "country": "ar", "icon": "https://user-uploads.online-go.com/c34688c6a11a187249197f6564cb03bd-64.png", "ratings": { "version": 5, "overall": { "rating": 1422.0796105979894, "deviation": 65.07992285841019, "volatility": 0.06005750156596201 } }, "ranking": 23.068450216211005, "professional": false, "ui_class": "" }, "description": "It classifies to the final of the championship of Year end single elimination.", "schedule": null, "title": null, "tournament_type": "elimination", "handicap": 0, "rules": "chinese", "time_per_move": 91200, "time_control_parameters": { "system": "fischer", "pause_on_weekends": false, "time_control": "fischer", "initial_time": 432000, "max_time": 604800, "time_increment": 86400, "speed": "correspondence" }, "is_open": true, "exclude_provisional": false, "group": { "id": 3640, "name": "Academy Alma Pacifica", "summary": "A place to discover oneself, we will work as a team with free classes, to discover the dynamic and spiritual aspects of Go. Solidarity with the group will improve our game, and the effort will help us grow as people.\n\nUn lugar para encontrarse con uno mism", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 205, "icon": "https://user-uploads.online-go.com/83e4f0d4d1e223ea665c842c306c78c5-64.png" }, "auto_start_on_max": false, "time_start": "2019-05-24T01:00:00Z", "players_start": 4, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 14, "analysis_enabled": true, "exclusivity": "open", "started": "2019-05-24T01:00:28.860180Z", "ended": "2019-10-25T07:30:35.041895Z", "start_waiting": "2019-05-24T01:00:27.733909Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/83e4f0d4d1e223ea665c842c306c78c5-15.png", "player_count": 21, "ranked": true }, { "id": 53730, "name": "9X9 Chinese", "director": { "id": 646878, "username": "Shikamaru4", "country": "gb", "icon": "https://user-uploads.online-go.com/4de7672cfb2c5d5d0a77668b7a721253-64.png", "ratings": { "version": 5, "overall": { "rating": 779.0027044554525, "deviation": 63.43343203946138, "volatility": 0.05993292089993528 } }, "ranking": 9.135366302661472, "professional": false, "ui_class": "supporter" }, "description": "Chinese 9X9 tournament", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "chinese", "time_per_move": 631680, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": true, "time_increment": 604800, "initial_time": 2419200, "max_time": 2419200 }, "is_open": true, "exclude_provisional": false, "group": { "id": 4081, "name": "9X9 PLAYERS", "summary": "9X9 games", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 3, "icon": "https://user-uploads.online-go.com/ab04e2d9619d69b9f635715fe6e1968f-64.png" }, "auto_start_on_max": true, "time_start": "2020-07-01T15:00:00Z", "players_start": 4, "first_pairing_method": "strength", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 16, "analysis_enabled": true, "exclusivity": "open", "started": "2020-03-03T23:03:00.649019Z", "ended": "2021-10-26T17:07:58.968980Z", "start_waiting": "2020-03-03T23:03:00.018781Z", "board_size": 9, "active_round": null, "icon": "https://user-uploads.online-go.com/ab04e2d9619d69b9f635715fe6e1968f-15.png", "player_count": 10, "ranked": true }, { "id": 86825, "name": "Tianyuan Nines 2019 Title Match - Board 3", "director": { "id": 40318, "username": "gamesorry", "country": "cn", "icon": "https://secure.gravatar.com/avatar/801cba34b77e0105326c402cc482cb09?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 2009.153719389611, "deviation": 68.72700373040577, "volatility": 0.06015597381452679 } }, "ranking": 31.068934729651563, "professional": false, "ui_class": "supporter" }, "description": "<!-- \nTianyuan Nines 2019 Title Match - Board 1\n-->\n\nTitle Holder: \n<a style=\"color:yellow\" href='https://online-go.com/user/view/43936/'>Sadaharu [Nines Mingren] x1</a>\n\n<table style=\"text-align:center;empty-cells:hide;table-layout:fixed;border:1px solid\">\n<tr>\n\t<td style=\"text-align:center\"><b>Edition</b></td>\n\t<td style=\"text-align:center\"><b>Title</b></td>\n\t<td style=\"text-align:center\"><b>Class</b></td>\n\t<td style=\"text-align:center\"><b>Year</b></td>\n\t<td style=\"text-align:center\"><b>Player 1</b></td>\n\t<td style=\"text-align:center\"><b>Player 2</b></td>\n\t<td></td>\n\t<td></td>\n\t<td><b>Matches</b></td>\n\t<td></td>\n\t<td></td>\n</tr>\n<tr>\n\t<td>13th</td>\n\t<td style=\"color:yellow\">Tianyuan</td>\n\t<td>Nines</td>\n\t<td>2019</td>\n\t<td><a style=\"color:yellow\" href='https://online-go.com/player/43936/Sadaharu'>Sadaharu [Nines Mingren]</a></td>\n\t<td><a href='https://online-go.com/player/1039/'>joachim [2d]</a></td>\n\t<td><a style=\"color:skyblue\" href='https://online-go.com/game/view/42072938'>Board 1</a></td>\n\t<td><a style=\"color:skyblue\" href='https://online-go.com/game/view/42241064'>Board 2</a></td>\n\t<td><a style=\"color:skyblue\" href='https://online-go.com/tournament/86825'>Board 3</a></td>\n\t<td><a style=\"color:skyblue\" href='https://online-go.com/tournament/86826'>Board 4</a></td>\n\t<td><a style=\"color:skyblue\" href='https://online-go.com/tournament/86827'>Board 5</a></td>\n</tr>\n</table>\n\n<!-- <td><a style=\"color:skyblue\" href='https://online-go.com/game/view/28565287'>Board 1</a></td> -->\n<!-- <td><a style=\"color:skyblue\" href='https://online-go.com/game/view/28565315'>Board 2</a></td> -->\n<!-- <td><a style=\"color:skyblue\" href='https://online-go.com/game/view/28565331'>Board 3</a></td> -->\n<!-- <td><a style=\"color:skyblue\" href='https://online-go.com/game/view/28565345'>Board 4</a></td> -->\n<!-- <td><a style=\"color:skyblue\" href='https://online-go.com/game/view/28565364'>Board 5</a></td> -->\n\nTitle Tournament: <a style=\"color:yellow\" href='https://online-go.com/tournament/50552'>Tianyuan Nines Title Tournament 2019</a>\n\nNote:\n- Bots and use of AI are prohibited in this tournament and violators will be disqualified.", "schedule": null, "title": null, "tournament_type": "elimination", "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? Join us!", "require_invitation": false, "is_public": true, "admin_only_tournaments": true, "hide_details": false, "member_count": 3012, "icon": "https://user-uploads.online-go.com/e172c7a14ec09bda65360d6b80884e67-64.png" }, "auto_start_on_max": false, "time_start": "2022-03-22T08:01:00Z", "players_start": 2, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "invite", "started": "2022-03-22T08:01:11.322106Z", "ended": "2022-06-04T08:57:52.812055Z", "start_waiting": "2022-03-22T08:01:11.267994Z", "board_size": 9, "active_round": null, "icon": "https://user-uploads.online-go.com/e172c7a14ec09bda65360d6b80884e67-15.png", "player_count": 2, "ranked": true }, { "id": 134906, "name": "Handicap Arena 2025 - 099", "director": { "id": 526987, "username": "Gia", "country": "gr", "icon": "https://user-uploads.online-go.com/14567c9a0670b7d4a44606ba237f054d-64.png", "ratings": { "version": 5, "overall": { "rating": 1131.3390674606985, "deviation": 63.89894928210641, "volatility": 0.06006068621581099 } }, "ranking": 17.773619993220706, "professional": false, "ui_class": "supporter" }, "description": "Part of an arena tournament - 2025. For details, rules and arena-standings see the group page.\n\nThe tournament will start as soon as it is full (10 players).", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": -1, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "time_increment": 86400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 13655, "name": "Handicap Arena", "summary": "Organising arena-type handicap correspondence tournaments.", "require_invitation": false, "is_public": true, "admin_only_tournaments": true, "hide_details": false, "member_count": 108, "icon": "https://user-uploads.online-go.com/5fe2ed1a16feb631d49732f2de506b9e-64.png" }, "auto_start_on_max": true, "time_start": "2025-12-07T22:00:00Z", "players_start": 10, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "open", "started": "2025-12-07T13:48:41.284877Z", "ended": "2026-05-13T01:34:00.808615Z", "start_waiting": "2025-12-07T13:48:40.628674Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/5fe2ed1a16feb631d49732f2de506b9e-15.png", "player_count": 10, "ranked": true }, { "id": 135874, "name": "Open Tournament 2", "director": { "id": 1926369, "username": "kyliewee02", "country": "un", "icon": "https://user-uploads.online-go.com/ca62c83151453f1e19f9b6e5f28f3f48-64.png", "ratings": { "version": 5, "overall": { "rating": 720.7945416911429, "deviation": 178.85663899190317, "volatility": 0.06000133866351721 } }, "ranking": 7.337528416040835, "professional": false, "ui_class": "provisional" }, "description": "Anyone wants to be challenged by a noob player? Anyone can join this tournament! Contact me if you want to join my group. ~Destroyer802", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 604800, "time_control_parameters": { "system": "simple", "time_control": "simple", "speed": "correspondence", "pause_on_weekends": false, "per_move": 604800 }, "is_open": true, "exclude_provisional": false, "group": { "id": 16022, "name": "ChatRoom404", "summary": "This is just a group. Do whatever you like here! It is also alright if you want to just join this group and chat. ~Destroyer802 😝", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 19, "icon": "https://user-uploads.online-go.com/8b1bbf17216ac7c771cfc31ad15f297a-64.png" }, "auto_start_on_max": false, "time_start": "2026-01-01T09:00:00Z", "players_start": 2, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "open", "started": "2026-01-01T09:00:46.047541Z", "ended": "2026-01-10T12:41:14.579574Z", "start_waiting": "2026-01-01T09:00:45.998040Z", "board_size": 9, "active_round": null, "icon": "https://user-uploads.online-go.com/8b1bbf17216ac7c771cfc31ad15f297a-15.png", "player_count": 3, "ranked": false }, { "id": 136221, "name": "BegINner fiGhT!!! ver2", "director": { "id": 1742791, "username": "AKIBABO", "country": "kr", "icon": "https://user-uploads.online-go.com/42e46e1ae449cfa5e3b99fac1d8dfab8-64.png", "ratings": { "version": 5, "overall": { "rating": 913.2119125160514, "deviation": 61.49753188637411, "volatility": 0.05983422707717786 } }, "ranking": 12.81513848055125, "professional": false, "ui_class": "" }, "description": "BegINner fiGhT!!!", "schedule": null, "title": null, "tournament_type": "mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "time_increment": 86400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 25, "name": "Go Basics", "summary": "A learning and teaching environment for players of all strengths with emphasis on tournaments and game reviews. 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