List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=max_ranking&page=707
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 60389,
    "next": "https://online-go.com/api/v1/tournaments/?format=api&ordering=max_ranking&page=708",
    "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=max_ranking&page=706",
    "results": [
        {
            "id": 1642,
            "name": "Jamoboy's mini-tournament",
            "director": {
                "id": 6624,
                "username": "Jamoboy",
                "country": "us",
                "icon": "https://secure.gravatar.com/avatar/eb0a0627b3fc7e9b9499a41ee88850f0?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 968.6608902391655,
                        "deviation": 78.45617307446206,
                        "volatility": 0.05997559201446592
                    }
                },
                "ranking": 14.179753029681438,
                "professional": false,
                "ui_class": ""
            },
            "description": "",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 86400,
            "time_control_parameters": {
                "time_control": "simple",
                "per_move": 86400
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 78,
                "name": "OGS Mini Tournaments",
                "summary": "The home for all of the old OGS mini tournaments",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 385,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": null,
            "players_start": null,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 0,
            "max_ranking": 34,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2011-11-23T00:07:04Z",
            "ended": "2011-11-22T23:07:04Z",
            "start_waiting": null,
            "board_size": 9,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 0,
            "ranked": true
        },
        {
            "id": 142015,
            "name": "CHEERFUL GO #143 Single Elimination",
            "director": {
                "id": 1220803,
                "username": "nobhaete",
                "country": "cn",
                "icon": "https://user-uploads.online-go.com/e840f4920c1211e712dd265d8b780926-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1988.2700488587398,
                        "deviation": 71.79353726672373,
                        "volatility": 0.059777924299808924
                    }
                },
                "ranking": 30.82704825514136,
                "professional": false,
                "ui_class": ""
            },
            "description": "Hi everyone, welcome and have fun!\n\nSingle elimination tournament every Thursday.\n\nPlease contact nobhaete directly if you have any questions.",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 43884,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 43200,
                "initial_time": 86400,
                "max_time": 172800
            },
            "is_open": true,
            "exclude_provisional": true,
            "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\n\nHAPPY",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 77,
                "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2026-07-16T04:00:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 34,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2026-07-16T04:00:48.717513Z",
            "ended": null,
            "start_waiting": "2026-07-16T04:00:48.381205Z",
            "board_size": 19,
            "active_round": 1,
            "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-15.png",
            "player_count": 21,
            "ranked": true
        },
        {
            "id": 133430,
            "name": "CHEERFUL GO #110 Single Elimination",
            "director": {
                "id": 1220803,
                "username": "nobhaete",
                "country": "cn",
                "icon": "https://user-uploads.online-go.com/e840f4920c1211e712dd265d8b780926-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1988.2700488587398,
                        "deviation": 71.79353726672373,
                        "volatility": 0.059777924299808924
                    }
                },
                "ranking": 30.82704825514136,
                "professional": false,
                "ui_class": ""
            },
            "description": "Hi everyone, welcome and have fun!\n\nPAUSE/ VACATION = DISQUALIFICATION! If your opponent pauses or has a vacation, or you have any question, please contact nobhaete.\n\nSingle elimination tournament every Thursday.",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 43884,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 43200,
                "initial_time": 86400,
                "max_time": 172800
            },
            "is_open": true,
            "exclude_provisional": true,
            "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\n\nHAPPY",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 77,
                "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2025-10-23T04:00:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 34,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-10-23T04:00:58.313547Z",
            "ended": "2025-12-16T14:31:12.895029Z",
            "start_waiting": "2025-10-23T04:00:58.220655Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-15.png",
            "player_count": 6,
            "ranked": true
        },
        {
            "id": 140097,
            "name": "HAPPY GO #147 Double Elimination",
            "director": {
                "id": 1220803,
                "username": "nobhaete",
                "country": "cn",
                "icon": "https://user-uploads.online-go.com/e840f4920c1211e712dd265d8b780926-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1988.2700488587398,
                        "deviation": 71.79353726672373,
                        "volatility": 0.059777924299808924
                    }
                },
                "ranking": 30.82704825514136,
                "professional": false,
                "ui_class": ""
            },
            "description": "Hi everyone, welcome and have FUN!\n\nDouble elimination tournament every Sunday.\n\nPlease contact nobhaete directly if you have any questions.",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 43884,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 43200,
                "initial_time": 86400,
                "max_time": 172800
            },
            "is_open": true,
            "exclude_provisional": true,
            "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\n\nHAPPY",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 77,
                "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2026-05-17T04:00:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 34,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2026-05-17T04:00:50.159303Z",
            "ended": null,
            "start_waiting": "2026-05-17T04:00:50.053172Z",
            "board_size": 19,
            "active_round": 2,
            "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-15.png",
            "player_count": 15,
            "ranked": true
        },
        {
            "id": 5227,
            "name": "Poovar 2015",
            "director": {
                "id": 66704,
                "username": "mita va",
                "country": "at",
                "icon": "https://user-uploads.online-go.com/7a4d02532a68fa46afdbca6ba63e594a-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 713.211278738289,
                        "deviation": 63.8780464338124,
                        "volatility": 0.05913143949089395
                    }
                },
                "ranking": 7.092683979134672,
                "professional": false,
                "ui_class": "supporter"
            },
            "description": "ktu xdft",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 22560,
            "time_control_parameters": {
                "time_control": "fischer",
                "initial_time": 86400,
                "max_time": 259200,
                "time_increment": 21600
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 102,
                "name": "India Go Club - AIGP",
                "summary": "Affiliated with **Association of Indian Go Players** - [AIGP](https://aigp.org.in).\n\nThis is a group for all Indians who play go and reside in or around India. We are also happy to have any go player around the planet, interested in meeting and networking ",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 254,
                "icon": "https://user-uploads.online-go.com/9c775ca930451450cefbcdd80b14c02e-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2015-03-01T16:08:00Z",
            "players_start": 4,
            "first_pairing_method": "slaughter",
            "subsequent_pairing_method": "random",
            "min_ranking": 25,
            "max_ranking": 34,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2015-03-01T16:08:19.513693Z",
            "ended": "2015-03-17T11:07:55.508948Z",
            "start_waiting": "2015-03-01T16:08:19.427935Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/9c775ca930451450cefbcdd80b14c02e-15.png",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 799,
            "name": "apei's 1st Anniversary",
            "director": {
                "id": 20502,
                "username": "nobush",
                "country": "cn",
                "icon": "https://user-uploads.online-go.com/d0c558f672e167a609363bda95da4150-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1385.0263218506466,
                        "deviation": 64.13807193208415,
                        "volatility": 0.06068178281389697
                    }
                },
                "ranking": 22.457263122416716,
                "professional": false,
                "ui_class": ""
            },
            "description": "",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": -1,
            "rules": "chinese",
            "time_per_move": 86400,
            "time_control_parameters": {
                "time_control": "fischer",
                "initial_time": 259200,
                "max_time": 604800,
                "time_increment": 86400
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 78,
                "name": "OGS Mini Tournaments",
                "summary": "The home for all of the old OGS mini tournaments",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 385,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": null,
            "players_start": null,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 0,
            "max_ranking": 34,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2009-07-18T21:15:03Z",
            "ended": "2009-07-18T19:15:03Z",
            "start_waiting": null,
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 0,
            "ranked": true
        },
        {
            "id": 89003,
            "name": "第2回LINE囲碁仲間募集@OGS大会open",
            "director": {
                "id": 1133458,
                "username": "yamaboshi_at_OGS",
                "country": "jp",
                "icon": "https://user-uploads.online-go.com/dec68910d8ec1a906027f06ac8466775-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1531.2130181340956,
                        "deviation": 61.4196142058895,
                        "volatility": 0.05990068887800818
                    }
                },
                "ranking": 24.780159568702093,
                "professional": false,
                "ui_class": ""
            },
            "description": "LINE囲碁仲間募集@OGSの大会です。\n外部へも参加解放します。\n開催1日延期しました。\neveryone welcome!",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 44160,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 43200,
                "initial_time": 86400,
                "max_time": 259200
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 11374,
                "name": "LINE囲碁仲間募集@OGS",
                "summary": "LINEオープンチャット、囲碁仲間募集のOGS版です。",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 39,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2022-04-23T10:00:00Z",
            "players_start": 3,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 19,
            "max_ranking": 34,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-04-23T10:00:33.137227Z",
            "ended": "2022-06-03T02:01:12.842317Z",
            "start_waiting": "2022-04-23T10:00:32.939271Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 6,
            "ranked": true
        },
        {
            "id": 130858,
            "name": "HAPPY GO #114 Double Elimination",
            "director": {
                "id": 1220803,
                "username": "nobhaete",
                "country": "cn",
                "icon": "https://user-uploads.online-go.com/e840f4920c1211e712dd265d8b780926-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1988.2700488587398,
                        "deviation": 71.79353726672373,
                        "volatility": 0.059777924299808924
                    }
                },
                "ranking": 30.82704825514136,
                "professional": false,
                "ui_class": ""
            },
            "description": "Hi everyone, welcome and have FUN!\n\nPAUSE/ VACATION = DISQUALIFICATION! 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": 43884,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 43200,
                "initial_time": 86400,
                "max_time": 172800
            },
            "is_open": true,
            "exclude_provisional": true,
            "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\n\nHAPPY",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 77,
                "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2025-08-03T04:00:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 34,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-08-03T04:00:51.765908Z",
            "ended": "2025-12-01T04:36:58.797790Z",
            "start_waiting": "2025-08-03T04:00:51.666497Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-15.png",
            "player_count": 9,
            "ranked": true
        },
        {
            "id": 170,
            "name": "Open to all - 2 days per move",
            "director": {
                "id": 356,
                "username": "Dyonn",
                "country": "gb",
                "icon": "https://user-uploads.online-go.com/d34852f36c3644d382908282ee323e3f-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1636.4746325504195,
                        "deviation": 64.48383351162781,
                        "volatility": 0.06022184009686298
                    }
                },
                "ranking": 26.31926579391987,
                "professional": false,
                "ui_class": ""
            },
            "description": "",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 172800,
            "time_control_parameters": {
                "time_control": "simple",
                "per_move": 172800
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 78,
                "name": "OGS Mini Tournaments",
                "summary": "The home for all of the old OGS mini tournaments",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 385,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": null,
            "players_start": null,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 0,
            "max_ranking": 34,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2007-01-07T09:47:00Z",
            "ended": "2007-02-24T13:59:00Z",
            "start_waiting": null,
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 0,
            "ranked": true
        },
        {
            "id": 127190,
            "name": "HAPPY GO #100 Double Elimination",
            "director": {
                "id": 1220803,
                "username": "nobhaete",
                "country": "cn",
                "icon": "https://user-uploads.online-go.com/e840f4920c1211e712dd265d8b780926-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1988.2700488587398,
                        "deviation": 71.79353726672373,
                        "volatility": 0.059777924299808924
                    }
                },
                "ranking": 30.82704825514136,
                "professional": false,
                "ui_class": ""
            },
            "description": "Hi everyone, welcome and have FUN!\n\nPAUSE/ VACATION = DISQUALIFICATION! 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": 43884,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 43200,
                "initial_time": 86400,
                "max_time": 172800
            },
            "is_open": true,
            "exclude_provisional": true,
            "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\n\nHAPPY",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 77,
                "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2025-04-13T04:00:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 34,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-04-13T04:00:15.061976Z",
            "ended": "2025-08-17T17:18:52.389014Z",
            "start_waiting": "2025-04-13T04:00:14.884398Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-15.png",
            "player_count": 16,
            "ranked": true
        }
    ]
}