Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments/?format=api&ordering=first_pairing_method&page=1215
{ "count": 60647, "next": "https://online-go.com/api/v1/tournaments/?format=api&ordering=first_pairing_method&page=1216", "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=first_pairing_method&page=1214", "results": [ { "id": 134025, "name": "Correspondence 9x9 RoundRobin 2025-11-04 19:00", "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 Site-wide Tournament", "schedule": { "id": 5, "name": "Correspondence 9x9 RoundRobin", "rrule": "DTSTART:20260815T190000Z\nRRULE:FREQ=DAILY;INTERVAL=3", "active": true, "created": "2015-02-20T05:56:18.340749Z", "last_run": "2026-08-15T19:00:29.475937Z", "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": "2026-08-18T19:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 95543, "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": "2025-11-04T19:00:22.611719Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2025-11-04T19:00:32.168954Z", "ended": "2025-11-20T20:53:53.870582Z", "start_waiting": "2025-11-04T19:00:31.915396Z", "board_size": 9, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_9.png", "player_count": 6, "ranked": true }, { "id": 59089, "name": "yo average tournament for 25ks to 23ks", "director": { "id": 748408, "username": "Sports for Life", "country": "us", "icon": "https://user-uploads.online-go.com/c6258ee239e8c0c6c2c9f59005725d81-64.png", "ratings": { "version": 5, "overall": { "rating": 774.2935361093267, "deviation": 71.4033398364045, "volatility": 0.059906278529480765 } }, "ranking": 8.994996966313037, "professional": false, "ui_class": "" }, "description": "please join", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "chinese", "time_per_move": 89280, "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": 4456, "name": "Our Go House", "summary": "Hello this is Our Go House π°π°\nππππ YEET", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 160, "icon": "https://user-uploads.online-go.com/bf53577eefa2af10bcf48655c23a2b4a-64.png" }, "auto_start_on_max": false, "time_start": "2020-04-16T15:00:00Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "strength", "min_ranking": 5, "max_ranking": 5, "analysis_enabled": true, "exclusivity": "open", "started": "2020-04-16T20:48:51.787137Z", "ended": "2020-05-28T14:29:29.508668Z", "start_waiting": "2020-04-16T20:48:51.317046Z", "board_size": 9, "active_round": null, "icon": "https://user-uploads.online-go.com/bf53577eefa2af10bcf48655c23a2b4a-15.png", "player_count": 4, "ranked": true }, { "id": 9615, "name": "Sunjang Baduk Tournament 4th Season (Group C3)", "director": { "id": 47657, "username": "BongoBob", "country": "_Pirate", "icon": "https://secure.gravatar.com/avatar/3b18351f52879789ff5a1edb012172f1?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 2003.4767336494497, "deviation": 77.72127371522465, "volatility": 0.06000270198740903 } }, "ranking": 31.003430413165, "professional": false, "ui_class": "" }, "description": "## <i class=\"fontnova-turtle\"></i> Correspondence Sunjang Baduk Tournament\n### Season 4 - Group C3\n\n###**Read the description below.** \n- ####You have **7 days** to join your round-robin after receiving the invitation\n- ####<font color=\"red\">**SPECIAL OPENING RULES:**</font> ([See description][Correspondence Tournament])\n\n   ![Opening Rule][sunjang opening]\n___ \n### **Title Holder:** <font color=\"gold\">**π**</font> [illluck] <font color=\"gold\">**π**</font> \n\n<table border='2'>\n <tr>\n <th colspan=\"9\"><i class=\"fontnova-turtle\"></i> [Correspondence \nTournament]</th>\n </tr>\n <tr>\n <th width=\"70\" rowspan=\"3\">Season</td>\n <th width=\"90\" rowspan=\"3\"><font \ncolor=\"Gold\">Champion<br>π</font></td>\n <th width=\"90\" rowspan=\"3\"><font \ncolor=\"silver\">Runner-up<br>π</font></td>\n <th width=\"90\" rowspan=\"3\"><font color=#CD7F32> 3rd \nPlace<br>π</font></td>\n <th colspan=\"5\">Groups / Rounds</td>\n </tr>\n <tr>\n <th width=\"45\" rowspan=\"2\">*Final*</td>\n <th colspan=\"4\">Divisions</td>\n </tr>\n <tr>\n <th width=\"60\" colspan=\"2\">*A*</td>\n <th width=\"30\">*B*</td>\n <th width=\"30\">*C*</td>\n </tr>\n <tr>\n <td>2011</td>\n <td>[vitality]</td>\n <td>[Uberdude]</td>\n <td>[illluck]</td>\n <td>-</td>\n <td>[A](https://online-go.com/tournament/1533)</td>\n <td>-</td>\n <td>[B](https://online-go.com/tournament/1532)</td>\n <td>-</td>\n </tr>\n <tr>\n <td>2012</td>\n <td>[illluck]</td>\n <td>[fengitreon]</td>\n <td>[MatCauthon]</td>\n <td>-</td>\n <td>[A](https://online-go.com/tournament/1975)</td>\n <td>-</td>\n <td>[B](https://online-go.com/tournament/1976)</td>\n <td>-</td>\n </tr>\n <tr>\n <td>2013-14</td>\n <td>[illluck]</td>\n <td>[ZyBeX86]</td>\n <td>[kavias]</td>\n <td>[π](https://online-go.com/tournament/2984)</td>\n <td>[A1](https://online-go.com/tournament/2709)</td>\n <td>[A2](https://online-go.com/tournament/2711)</td>\n <td>[B](https://online-go.com/tournament/2712)</td>\n <td>[C](https://online-go.com/tournament/2713)</td>\n </tr>\n</table>\n___\n###**Format:** League\n\n###The Divisions:\n- Hierarchical structure, labeled ***A***, ***B***, ***C***, \n***D***, etc.\n- Assorted in groups. Top division has two (**A1**, **A2**)\n- Players of similar strength\n\n###The Groups:\n- 5 to 9 players (ideally 7)\n- Seeded by strength (<i class=\"fa\"></i> overall rank) \n- Compete in a *Simultaneous Round-robin*\n\n###The Final Round: 3 players\n- Qualify: the winners of **A1** and **A2**, and the *Title \nHolder*.\n- Merit based tie-break (good title defense, good performance in \nprevious round)\n- A third player<sup>1</sup> may be drawn if needed\n\n### The games:\n- Fischer Timing, 3 days on the initial timer and 1 day increment \nper move (capped at 7 days). No weekend stop\n- No handicap, 6.5 komi. **Sunjang Baduk** starting position\n- Korean rules\n- **Conditional moves** enabled\n\n###Promotions & Demotions:\n- Best player<sup>1</sup> per Group promotes one division up\n- Worst 3 players<sup>1</sup> per Division demote one division down\n- Dropped and disqualified players reapply as new players\n- Promotions based on rank may be awarded to fill available space \n(both new and old players apply, even if demoted).\n___\n\n####Notes\n<sup>1</sup>Best and worst players are determined first by Scored \nPoints, then the Sum of defeated opponent's scores (SODOS) and \nlastly by <i class=\"fa\"></i> overall rank.\n\nFor more details you may visit the [Sensei's pages][Correspondence \nTournament].\n\n[fengitreon]: https://online-go.com/user/view/11442/fengitreon\n[illluck]: https://online-go.com/user/view/8913/illluck\n[kavias]: https://online-go.com/user/view/4048\n[MatCauthon]: https://online-go.com/user/view/5832/MatCauthon\n[vitality]: https://online-go.com/user/view/35184/vitality\n[Uberdude]: https://online-go.com/user/view/8592/Uberdude\n[ZyBeX86]: https://online-go.com/user/view/52701\n\n[group]: https://online-go.com/group/142\n[sunjang opening]: http://i.imgur.com/vdZ0oLB.png?1\n[Correspondence Tournament]: http://senseis.xmp.net/?SunjangBadukTournamentAtOGS", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "korean", "time_per_move": 89280, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "max_time": 604800, "time_increment": 86400 }, "is_open": true, "exclude_provisional": false, "group": { "id": 142, "name": "Sunjang Baduk - μμ₯λ°λ", "summary": "For those who would like to play Sunjang Baduk, a form of Go which was popular in Korea (Joseon) through the 16th century.", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 199, "icon": 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"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": "2016-03-07T01:00:50.520402Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2016-03-07T01:01:11.220096Z", "ended": "2016-05-06T16:54:57.726028Z", "start_waiting": "2016-03-07T01:01:10.235689Z", "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": 10263, "name": "Correspondence 19x19 RoundRobin 2015-08-27 01:00", "director": { "id": 4, "username": "matburt", "country": "us", "icon": 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"slaughter", "subsequent_pairing_method": "slaughter", "settings": { "num_rounds": "3", "upper_bar": "20", "lower_bar": "10", "group_size": "3", "maximum_players": 10 }, "next_run": "2026-08-16T19:00:00Z", "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": 432000, "time_increment": 86400 }, "is_open": true, "exclude_provisional": true, "group": null, "auto_start_on_max": false, "time_start": "2015-08-27T01:00:24.698712Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2015-08-27T01:00:44.295454Z", "ended": "2015-12-19T17:38:43.123567Z", "start_waiting": "2015-08-27T01:00:43.546476Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png", "player_count": 10, "ranked": true }, { "id": 7773, "name": "1st εε³Άεε³Ά; ΠΡΡΠΈΠ»ΡΡΠΊΠΈΠ΅ ΠΎΡΡΡΠΎΠ²Π° 19x19, juli 2015", "director": { "id": 66704, "username": "mita va", "country": "at", "icon": "https://user-uploads.online-go.com/7a4d02532a68fa46afdbca6ba63e594a-64.png", "ratings": { "version": 5, "overall": { "rating": 735.4803060263768, "deviation": 64.17552755428969, "volatility": 0.0591269631851293 } }, "ranking": 7.804455343163836, "professional": false, "ui_class": "supporter" }, "description": "free and together", "schedule": null, "title": null, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "time_per_move": 36960, "time_control_parameters": { "time_control": "fischer", "initial_time": 86400, "max_time": 345600, "time_increment": 36000 }, "is_open": true, "exclude_provisional": false, "group": { "id": 374, "name": "Slovenija", "summary": "", "require_invitation": false, "is_public": true, 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