List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=13
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 61434,
    "next": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-max_ranking&page=14",
    "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-max_ranking&page=12",
    "results": [
        {
            "id": 109427,
            "name": "9x9 Open League #80",
            "director": {
                "id": 1015644,
                "username": "wiadp1",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1316.2081538942523,
                        "deviation": 70.06730742642067,
                        "volatility": 0.06033179136139116
                    }
                },
                "ranking": 21.277442995339452,
                "professional": false,
                "ui_class": ""
            },
            "description": "Open league for everyone. Tournament will be started as soon as 10 players will join it.\n\nPrevious winners: https://online-go.com/group/10842",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 95543,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "time_increment": 86400,
                "initial_time": 259200,
                "max_time": 604800
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 3524,
                "name": "9x9 Lovers",
                "summary": "A group for Go players who love the 9x9 board.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 723,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2023-11-19T20:00:00Z",
            "players_start": 10,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2023-11-17T23:43:17.547798Z",
            "ended": "2023-12-14T04:22:24.347168Z",
            "start_waiting": "2023-11-17T23:43:17.001248Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 10,
            "ranked": true
        },
        {
            "id": 43221,
            "name": "China Tournament",
            "director": {
                "id": 481167,
                "username": "Lapshin Fedor",
                "country": "_Starfleet",
                "icon": "https://user-uploads.online-go.com/514b958049fc9a9f35a9d05f36abd40d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1097.2774534599848,
                        "deviation": 88.58153354396005,
                        "volatility": 0.06001063471317442
                    }
                },
                "ranking": 17.065927338705787,
                "professional": false,
                "ui_class": ""
            },
            "description": "<ul>\n    <li><pre>China rules</pre></li>\n    <li><pre>Fisher clock( 3 day + 2 day (< 5 day) )</pre></li>\n    <li><pre>MacMagon system</pre></li>\n</ul>\n\n<div align=\"center\", style=\"font-size: 20px;\"><b>Good Game !</b></div>",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 175680,
            "time_control_parameters": {
                "system": "fischer",
                "pause_on_weekends": true,
                "time_control": "fischer",
                "initial_time": 259200,
                "max_time": 432000,
                "time_increment": 172800,
                "speed": "correspondence"
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 3,
                "name": "OGS",
                "summary": "An open group for folks' who like OGS!",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 1808,
                "icon": "https://user-uploads.online-go.com/09ea48b349cad5d5f27e07f5e0177803-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2018-12-09T14:00:00Z",
            "players_start": 15,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "slide",
            "min_ranking": 13,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2018-12-09T14:00:08.252301Z",
            "ended": "2020-06-26T06:31:34.184643Z",
            "start_waiting": "2018-12-09T14:00:06.863310Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/09ea48b349cad5d5f27e07f5e0177803-15.png",
            "player_count": 16,
            "ranked": true
        },
        {
            "id": 67510,
            "name": "Freitagsturnier",
            "director": {
                "id": 865290,
                "username": "Carsten.Schwarz",
                "country": "de",
                "icon": "https://secure.gravatar.com/avatar/debd3c0fddbd76f1ae21973b93e99472?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1606.3774663710713,
                        "deviation": 160.1112853853231,
                        "volatility": 0.060024269947845106
                    }
                },
                "ranking": 25.8895395020858,
                "professional": false,
                "ui_class": "provisional"
            },
            "description": "Freitagsturnier test",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 10,
            "time_control_parameters": {
                "system": "absolute",
                "time_control": "absolute",
                "speed": "live",
                "pause_on_weekends": false,
                "total_time": 900
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 7187,
                "name": "Canisius_Kolleg",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 10,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2020-11-06T15:00:00Z",
            "players_start": 3,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2020-11-06T14:55:40.100559Z",
            "ended": "2020-11-06T15:09:04.047325Z",
            "start_waiting": "2020-11-06T14:55:39.986090Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 3,
            "ranked": true
        },
        {
            "id": 59771,
            "name": "🔥vs🔥9x9",
            "director": {
                "id": 736025,
                "username": "周朗禧",
                "country": "cn",
                "icon": "https://secure.gravatar.com/avatar/e0fe0e2e712e05e1681898969ada7ba0?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1090.2660097211576,
                        "deviation": 78.91903907630135,
                        "volatility": 0.059994869907320864
                    }
                },
                "ranking": 16.917527564150394,
                "professional": false,
                "ui_class": ""
            },
            "description": "🔥vs🔥 🔥vs🔥 🔥vs🔥 🔥vs🔥 🔥vs🔥 🔥vs🔥 🔥vs🔥 🔥vs🔥",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 89280,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "time_increment": 86400,
                "initial_time": 259200,
                "max_time": 604800
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 4530,
                "name": "HKCGA 對局室",
                "summary": "\n同學想下棋可在下方留言,最好寫上自己棋力,方便對手設定合適讓子。 ( K = 級、 D = 段 )\n\nP.S. 此對局室只限 \" 香港兒童圍棋學院-網絡班 \" 學生使用。\n\n同學在此對局室,必須使用自己 \"中文全名\" 的帳號來對弈,敬請合作 !\n\n(hkcga2004)院長會不定時上線跟大家互相切磋,歡迎指教!",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 115,
                "icon": "https://user-uploads.online-go.com/2ce7e016e6fbea633e91b036ce8e5f19-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2020-04-28T13:50:00Z",
            "players_start": 1,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2020-04-28T13:50:20.708465Z",
            "ended": "2020-04-28T13:50:20.666241Z",
            "start_waiting": "2020-04-28T13:50:20.544810Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/2ce7e016e6fbea633e91b036ce8e5f19-15.png",
            "player_count": 1,
            "ranked": true
        },
        {
            "id": 55601,
            "name": "Julko's 8",
            "director": {
                "id": 15530,
                "username": "Julko",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/71fa797ba41fd26c92f7ed5fda17613a-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 924.99173455132,
                        "deviation": 66.44856588313243,
                        "volatility": 0.059285741364538166
                    }
                },
                "ranking": 13.111848383884832,
                "professional": false,
                "ui_class": "supporter"
            },
            "description": "Playing Go",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "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": 7,
                "name": "Polish Go Players",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 462,
                "icon": "https://user-uploads.online-go.com/2bf108a559c752303005e32bfe754667-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2020-01-20T04:00:00Z",
            "players_start": 3,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slide",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-01-20T04:00:48.045501Z",
            "ended": "2020-08-01T13:36:07.726037Z",
            "start_waiting": "2020-01-20T04:00:47.381039Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/2bf108a559c752303005e32bfe754667-15.png",
            "player_count": 7,
            "ranked": true
        },
        {
            "id": 98482,
            "name": "My birthday",
            "director": {
                "id": 1143064,
                "username": "ZRSSDann",
                "country": "sg",
                "icon": "https://user-uploads.online-go.com/3fc85a52a0dcce2bc3033af4ef21c708-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1481.8848605019614,
                        "deviation": 68.31433548847164,
                        "volatility": 0.06046352798150052
                    }
                },
                "ranking": 24.022103287618204,
                "professional": false,
                "ui_class": ""
            },
            "description": "When I was born, and 10 years later, this happened...",
            "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": 12161,
                "name": "Geometry dash Fans!",
                "summary": "Tournaments every week!",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": true,
                "hide_details": false,
                "member_count": 9,
                "icon": "https://user-uploads.online-go.com/40daa8f935abda4d868791b75b22d311-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2023-01-02T00:18:00Z",
            "players_start": 1,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2023-01-02T00:18:01.077921Z",
            "ended": "2023-04-30T03:14:55.259650Z",
            "start_waiting": "2023-01-02T00:18:00.961863Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/40daa8f935abda4d868791b75b22d311-15.png",
            "player_count": 3,
            "ranked": true
        },
        {
            "id": 142627,
            "name": "第15回 囲碁を楽しもう大会",
            "director": {
                "id": 1997867,
                "username": "tt44hh1212",
                "country": "jp",
                "icon": "https://secure.gravatar.com/avatar/0334316ed006af7129cc97899294a1fa?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1021.9398613858513,
                        "deviation": 62.032689829888184,
                        "volatility": 0.05997975919879356
                    }
                },
                "ranking": 15.419281184455638,
                "professional": false,
                "ui_class": ""
            },
            "description": "囲碁を楽しみながら勝ち抜いていきましょう。",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 12,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "live",
                "pause_on_weekends": false,
                "time_increment": 10,
                "initial_time": 300,
                "max_time": 3600
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 16264,
                "name": "9x9 13x13 19x19 123 ! !",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 16,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2026-08-01T05:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2026-08-01T04:59:23.874218Z",
            "ended": "2026-08-01T06:31:06.011492Z",
            "start_waiting": "2026-08-01T04:59:23.747304Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 57218,
            "name": "Really Fast correspondence #7",
            "director": {
                "id": 523751,
                "username": "Knight-Hawk",
                "country": "_Pirate",
                "icon": "https://secure.gravatar.com/avatar/ebcdd983ef5a461fc40293b000c7e227?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1835.080788897759,
                        "deviation": 68.57545904469787,
                        "volatility": 0.0600653774068437
                    }
                },
                "ranking": 28.970963870765477,
                "professional": false,
                "ui_class": ""
            },
            "description": "NOT INTENDED FOR PEOPLE WHO USE VACATION",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 15360,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 14400,
                "initial_time": 86400,
                "max_time": 172800
            },
            "is_open": true,
            "exclude_provisional": false,
            "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": 840,
                "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2020-03-16T16:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-03-12T18:42:06.717173Z",
            "ended": "2020-04-10T20:07:37.726626Z",
            "start_waiting": "2020-03-12T18:41:59.448032Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-15.png",
            "player_count": 10,
            "ranked": true
        },
        {
            "id": 141588,
            "name": "Go in the Sun 2026",
            "director": {
                "id": 1621791,
                "username": "WrathOfGex",
                "country": "gb",
                "icon": "https://user-uploads.online-go.com/e4f737baf7f1c7369ca7fd935342f4d7-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 918.7221076466827,
                        "deviation": 60.447122761554624,
                        "volatility": 0.05995922357847156
                    }
                },
                "ranking": 12.954402668630449,
                "professional": false,
                "ui_class": ""
            },
            "description": "Today we encounter heat like no other. Only the power of Go can save us. But only one will rise to the top. Who will it be?",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": -1,
            "rules": "japanese",
            "time_per_move": 40,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "live",
                "pause_on_weekends": false,
                "main_time": 600,
                "period_time": 30,
                "periods": 5
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 12769,
                "name": "Liverpool Go Club",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 17,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2026-06-25T19:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2026-06-25T18:18:37.376302Z",
            "ended": "2026-06-25T18:22:56.761466Z",
            "start_waiting": "2026-06-25T18:18:37.332171Z",
            "board_size": 13,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 3,
            "ranked": false
        },
        {
            "id": 107877,
            "name": "ฝึกเล่นหมากล้อม 13*13 ครั้งที่2",
            "director": {
                "id": 1403924,
                "username": "a.chanapatz",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/ef3ee6b55f261cb7e057342392048475?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1300.332755957091,
                        "deviation": 102.2298403436758,
                        "volatility": 0.06000292594997068
                    }
                },
                "ranking": 20.996522509311184,
                "professional": false,
                "ui_class": ""
            },
            "description": "ฝึกเล่นหมากล้อมกระดาน 13*13 ครั้งที่2 เล่นกันทั้งหมด 3 กระดาน มีเวลาคนละ 7 นาที หลังหมดเวลา ต้องเดินภายในเวลา10 วินาที ขอให้สนุกกับการเล่นจร้า สู้ๆ",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 17,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "live",
                "pause_on_weekends": false,
                "main_time": 420,
                "period_time": 10,
                "periods": 1
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 13480,
                "name": "Go Academy",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 39,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2023-09-26T13:00:00Z",
            "players_start": 6,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2023-09-26T13:00:31.283355Z",
            "ended": "2023-09-26T13:43:17.167858Z",
            "start_waiting": "2023-09-26T13:00:31.087192Z",
            "board_size": 13,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 8,
            "ranked": true
        }
    ]
}