List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=681
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 60274,
    "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=-max_ranking&page=682",
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-max_ranking&page=680",
    "results": [
        {
            "id": 81428,
            "name": "legon",
            "director": {
                "id": 1032123,
                "username": "lucas ong",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/d7c356d4bcde480e1b8029580d3a7665?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1163.7771434338138,
                        "deviation": 95.37158237225563,
                        "volatility": 0.059992949222862815
                    }
                },
                "ranking": 18.428045649757543,
                "professional": false,
                "ui_class": ""
            },
            "description": "we good",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "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": 38,
                "name": "reddit",
                "summary": "/r/baduk",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 2287,
                "icon": "https://user-uploads.online-go.com/5021b9df7b49c54cc5eb5d8ce9d893bb-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2021-10-17T08:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2021-10-18T00:34:11.825369Z",
            "ended": "2021-12-12T12:46:25.096842Z",
            "start_waiting": "2021-10-18T00:34:11.737436Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/5021b9df7b49c54cc5eb5d8ce9d893bb-15.png",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 64279,
            "name": "T4 Ultra Tournament",
            "director": {
                "id": 747694,
                "username": "kingkaio",
                "country": "ua",
                "icon": "https://user-uploads.online-go.com/153fb07f8ce9121e748b2e51172936d2-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1167.6804695413712,
                        "deviation": 62.48738706337885,
                        "volatility": 0.06012577810744558
                    }
                },
                "ranking": 18.505561177652012,
                "professional": false,
                "ui_class": ""
            },
            "description": "T4 Ultra Tournament",
            "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": false,
            "group": {
                "id": 5683,
                "name": "Tournaments Group",
                "summary": "A group for people who like tournaments.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 66,
                "icon": "https://user-uploads.online-go.com/905cdf0c41d571282428b5d769b638c3-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2020-09-27T00:00:00Z",
            "players_start": 3,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2020-09-27T00:00:43.767765Z",
            "ended": "2020-09-28T23:36:32.626522Z",
            "start_waiting": "2020-09-27T00:00:43.549563Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/905cdf0c41d571282428b5d769b638c3-15.png",
            "player_count": 3,
            "ranked": true
        },
        {
            "id": 64867,
            "name": "gsfjgjs",
            "director": {
                "id": 816816,
                "username": "黃銘澤",
                "country": "ca",
                "icon": "https://user-uploads.online-go.com/b47b69026bf79459b6e42391604a39bc-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1246.0538433752113,
                        "deviation": 64.6600466078934,
                        "volatility": 0.059987309352680394
                    }
                },
                "ranking": 20.00943971980869,
                "professional": false,
                "ui_class": ""
            },
            "description": "bmhfdshf",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 36,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "live",
                "pause_on_weekends": false,
                "main_time": 600,
                "period_time": 30,
                "periods": 3
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 4812,
                "name": "2021 回歸盃圍棋手合賽  B組",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 19,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2020-08-30T08:35:00Z",
            "players_start": 2,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-08-30T08:35:59.519028Z",
            "ended": "2020-08-30T08:37:06.088882Z",
            "start_waiting": "2020-08-30T08:35:59.096711Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 2,
            "ranked": true
        },
        {
            "id": 133174,
            "name": "Go Playing Competition League #2",
            "director": {
                "id": 1436588,
                "username": "Arrow A6 anti-",
                "country": "zz",
                "icon": "https://user-uploads.online-go.com/8670729a0e8d1142fea14d8bd6800517-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 588.6751839572613,
                        "deviation": 80.73457404236709,
                        "volatility": 0.0636275307525229
                    }
                },
                "ranking": 5,
                "professional": false,
                "ui_class": ""
            },
            "description": "Go Playing Competition League #2",
            "schedule": null,
            "title": null,
            "tournament_type": "s_mcmahon",
            "handicap": 0,
            "rules": "ing",
            "time_per_move": 259200,
            "time_control_parameters": {
                "system": "simple",
                "time_control": "simple",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "per_move": 259200
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 13797,
                "name": " 无间勤碁术化  Go Advance forward forever",
                "summary": "欢迎围棋爱好者来到属于您的园地\n\n\n          In Your 💖 Go to Universes everywhere",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 496,
                "icon": "https://user-uploads.online-go.com/175d0b2a36101a52411db11b4d096829-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2025-10-15T23:00:00Z",
            "players_start": 4,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "slide",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2025-10-15T23:00:45.931962Z",
            "ended": "2026-02-08T22:25:18.806299Z",
            "start_waiting": "2025-10-15T23:00:45.590090Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/175d0b2a36101a52411db11b4d096829-15.png",
            "player_count": 7,
            "ranked": true
        },
        {
            "id": 61525,
            "name": "calibrated self-play",
            "director": {
                "id": 767655,
                "username": "katrain-dev",
                "country": "dk",
                "icon": "https://user-uploads.online-go.com/36d10f42fd3c0c022fd41d5aea21641c-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 2217.5714941400106,
                        "deviation": 65.77264340022225,
                        "volatility": 0.060296695904283736
                    }
                },
                "ranking": 33.35381836857881,
                "professional": false,
                "ui_class": "bot"
            },
            "description": "calibrated self-play",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "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": false,
            "group": {
                "id": 5460,
                "name": "KaTrain",
                "summary": "",
                "require_invitation": true,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 15,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2020-06-05T12:37:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "group",
            "started": "2020-06-05T12:37:24.592885Z",
            "ended": "2020-06-05T12:50:42.378142Z",
            "start_waiting": "2020-06-05T12:37:23.295852Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 8,
            "ranked": true
        },
        {
            "id": 83534,
            "name": "Torneo Invernale 2021",
            "director": {
                "id": 499654,
                "username": "Dainetti",
                "country": "it",
                "icon": "https://user-uploads.online-go.com/89b46db954968229bc5f0e01252e6c6e-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1641.5681205085893,
                        "deviation": 63.397466794888786,
                        "volatility": 0.059480382817567984
                    }
                },
                "ranking": 26.391207711710532,
                "professional": false,
                "ui_class": ""
            },
            "description": "Torneo Invernale Tortellino Go Club - Winter is coming, also a new tournament!!",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "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": 2243,
                "name": "Go Club del Tortellino",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 20,
                "icon": "https://user-uploads.online-go.com/efe8fd73e7f0427ccc8463dfb3e6bca5-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2021-12-12T13:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "group",
            "started": "2021-12-12T13:00:43.434585Z",
            "ended": "2022-05-12T16:22:43.045186Z",
            "start_waiting": "2021-12-12T13:00:42.920666Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/efe8fd73e7f0427ccc8463dfb3e6bca5-15.png",
            "player_count": 7,
            "ranked": true
        },
        {
            "id": 62998,
            "name": "Torneo like a boss",
            "director": {
                "id": 656476,
                "username": "yakiterotaku",
                "country": "co",
                "icon": "https://secure.gravatar.com/avatar/db396dc063b486743804cea62164cf30?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1220.4353518699966,
                        "deviation": 66.58894224846904,
                        "volatility": 0.060060349887760475
                    }
                },
                "ranking": 19.528521815949574,
                "professional": false,
                "ui_class": ""
            },
            "description": "Este es un torneo serio",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 66,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "live",
                "pause_on_weekends": false,
                "main_time": 600,
                "period_time": 60,
                "periods": 5
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 4806,
                "name": "COIN Centro de Inteligencias",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 65,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2020-07-11T17:30:00Z",
            "players_start": 2,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-07-11T17:30:20.593643Z",
            "ended": "2020-07-11T17:54:39.659048Z",
            "start_waiting": "2020-07-11T17:30:20.275755Z",
            "board_size": 13,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 138063,
            "name": "9x9 Open D.E. Cup #228",
            "director": {
                "id": 1015644,
                "username": "wiadp1",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1325.0529908848616,
                        "deviation": 70.58676374549262,
                        "volatility": 0.06023746882442591
                    }
                },
                "ranking": 21.43248918766429,
                "professional": false,
                "ui_class": ""
            },
            "description": "Double-Elimination tournament for everyone. It will be started as soon as 8 players will join it.\n\nPrevious winners: https://online-go.com/group/10842",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "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": 713,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2026-03-15T20:00:00Z",
            "players_start": 8,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2026-03-14T19:19:30.026516Z",
            "ended": null,
            "start_waiting": "2026-03-14T19:19:29.859293Z",
            "board_size": 9,
            "active_round": 4,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 8,
            "ranked": true
        },
        {
            "id": 83616,
            "name": "Good Days January '22",
            "director": {
                "id": 1075826,
                "username": "mrLeisurely",
                "country": "un",
                "icon": "https://user-uploads.online-go.com/02abe459ea4973697b75cbe942396527-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1206.342997883413,
                        "deviation": 243.31099021682815,
                        "volatility": 0.05999976736380084
                    }
                },
                "ranking": 19.259653699522907,
                "professional": false,
                "ui_class": "provisional"
            },
            "description": "Hi all! Another small round robin tournament. We are meeting new year, good luck in 2022!",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "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": false,
            "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": 1793,
                "icon": "https://user-uploads.online-go.com/09ea48b349cad5d5f27e07f5e0177803-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2022-01-01T14:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 15,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-01-01T14:00:52.276039Z",
            "ended": "2022-05-16T10:02:38.210594Z",
            "start_waiting": "2022-01-01T14:00:51.740851Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/09ea48b349cad5d5f27e07f5e0177803-15.png",
            "player_count": 8,
            "ranked": true
        },
        {
            "id": 138200,
            "name": "แข่งขันครั้งที่2",
            "director": {
                "id": 1834808,
                "username": "CP12",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/9e6657edb905f03c794b5126e0930eff?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 718.3342462557268,
                        "deviation": 157.18203853328103,
                        "volatility": 0.060000465207427335
                    }
                },
                "ranking": 7.258375118164892,
                "professional": false,
                "ui_class": ""
            },
            "description": "แข่งขัน",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 21,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "rapid",
                "pause_on_weekends": false,
                "main_time": 300,
                "period_time": 10,
                "periods": 5
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 16274,
                "name": "หมากล้อม ล้อมใจ",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 31,
                "icon": "https://user-uploads.online-go.com/f1ebbdbad8e7da980156e1af70e2c954-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2026-03-12T04:30:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slide",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "group",
            "started": "2026-03-12T04:30:45.337768Z",
            "ended": "2026-03-12T05:12:02.642243Z",
            "start_waiting": "2026-03-12T04:30:45.066489Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/f1ebbdbad8e7da980156e1af70e2c954-15.png",
            "player_count": 15,
            "ranked": false
        }
    ]
}