List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=1221
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 60654,
    "next": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-max_ranking&page=1222",
    "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-max_ranking&page=1220",
    "results": [
        {
            "id": 86005,
            "name": "5 -> 楊興宇 6 -> 林立",
            "director": {
                "id": 818416,
                "username": "傳碁學園",
                "country": "un",
                "icon": "https://user-uploads.online-go.com/225f58a6cdd437bb701ba1af0dd7678f-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1898.3468207617877,
                        "deviation": 71.28817954667363,
                        "volatility": 0.06041644550084839
                    }
                },
                "ranking": 29.755630942351214,
                "professional": false,
                "ui_class": ""
            },
            "description": "5 -> 楊興宇\n6 -> 林立",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 30,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "live",
                "pause_on_weekends": false,
                "main_time": 900,
                "period_time": 20,
                "periods": 2
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 7531,
                "name": "傳碁 C班",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 87,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": true,
            "time_start": "2022-02-12T08:00:00Z",
            "players_start": 2,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-02-12T07:14:43.946003Z",
            "ended": "2022-02-12T07:56:46.976104Z",
            "start_waiting": "2022-02-12T07:14:43.879492Z",
            "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": 30929,
            "name": "Normal Elimination 8 players (#28)",
            "director": {
                "id": 211504,
                "username": "Why am I playing",
                "country": "th",
                "icon": "https://user-uploads.online-go.com/5871c4b800476f93d2a66a0cb3e618cb-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1559.0919502754434,
                        "deviation": 69.84935092039798,
                        "volatility": 0.06153589767848298
                    }
                },
                "ranking": 25.197862543190354,
                "professional": false,
                "ui_class": ""
            },
            "description": "Start when Tournament have 8 players",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 89280,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "initial_time": 259200,
                "max_time": 604800,
                "time_increment": 86400,
                "speed": "correspondence"
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 454,
                "name": "Tournament Club",
                "summary": "Welcome to the TOURNAMENT CLUB, a remake of the 'Kyu Tournament Group'.\n\nIn this group, you will be able to participate in competitions for your level so that you will have a fair chance of winning! We also have special competitions that require special ru",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 77,
                "icon": "https://user-uploads.online-go.com/f9bc230408f387605b22aa31ff5d0022-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2017-11-08T13:00:00Z",
            "players_start": 7,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2017-10-13T11:08:14.438992Z",
            "ended": "2017-12-09T19:08:24.047278Z",
            "start_waiting": "2017-10-13T11:08:13.717213Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/f9bc230408f387605b22aa31ff5d0022-15.png",
            "player_count": 8,
            "ranked": true
        },
        {
            "id": 68126,
            "name": "Sunday tournament",
            "director": {
                "id": 56637,
                "username": "milanm",
                "country": "un",
                "icon": "https://user-uploads.online-go.com/3ca6488bbc5b99dee6389c8324babd42-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1627.4668823170612,
                        "deviation": 66.2338394369722,
                        "volatility": 0.05995436202757606
                    }
                },
                "ranking": 26.191487801350412,
                "professional": false,
                "ui_class": "aga"
            },
            "description": "weekly 9x9 tournament",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 31,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "live",
                "pause_on_weekends": false,
                "time_increment": 30,
                "initial_time": 120,
                "max_time": 180
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 5803,
                "name": "Massachusetts Go Foundation",
                "summary": "",
                "require_invitation": true,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 49,
                "icon": "https://user-uploads.online-go.com/ac9f8e424d9bbcbeaadc6a8c635f8262-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2020-11-22T18:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2020-11-22T17:58:24.869420Z",
            "ended": "2020-11-22T18:36:16.222734Z",
            "start_waiting": "2020-11-22T17:58:24.642129Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/ac9f8e424d9bbcbeaadc6a8c635f8262-15.png",
            "player_count": 7,
            "ranked": true
        },
        {
            "id": 141612,
            "name": "vhj 19x19 ytm vkjyhn",
            "director": {
                "id": 1821698,
                "username": "s578gz589",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/b661377ce4167f78278c7a199986ca37?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1109.154812611431,
                        "deviation": 65.9035034078589,
                        "volatility": 0.06007436550365843
                    }
                },
                "ranking": 17.315165463536385,
                "professional": false,
                "ui_class": ""
            },
            "description": "19x19",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 609587,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 604800,
                "initial_time": 604800,
                "max_time": 2419200
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 16264,
                "name": "9x9 13x13 19x19 123 ! !",
                "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": "2026-07-05T04:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "invite",
            "started": "2026-07-05T04:00:18.144595Z",
            "ended": null,
            "start_waiting": "2026-07-05T04:00:18.098241Z",
            "board_size": 19,
            "active_round": 1,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 6,
            "ranked": true
        },
        {
            "id": 85185,
            "name": "22/1 劉沛祥\t許澤延",
            "director": {
                "id": 729080,
                "username": "樂 碁",
                "country": "hk",
                "icon": "https://user-uploads.online-go.com/38ab1d2a0a44a76ba656aca3c2fb3101-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1376.5461424853938,
                        "deviation": 260.4210499451175,
                        "volatility": 0.059998813696822535
                    }
                },
                "ranking": 22.315085597176374,
                "professional": false,
                "ui_class": "provisional"
            },
            "description": "22/1 劉沛祥\t許澤延",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 23,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "live",
                "pause_on_weekends": false,
                "main_time": 1200,
                "period_time": 10,
                "periods": 2
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 7533,
                "name": "傳碁 A班",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 36,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": true,
            "time_start": "2022-01-22T11:00:00Z",
            "players_start": 2,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "group",
            "started": "2022-01-22T10:01:49.630466Z",
            "ended": "2022-01-22T11:02:08.884522Z",
            "start_waiting": "2022-01-22T10:01:49.571755Z",
            "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": 142821,
            "name": "Супер Тэсудзи ⚫⚪🗡️🏎️🏆",
            "director": {
                "id": 1574760,
                "username": "Leoprogo",
                "country": "ru",
                "icon": "https://user-uploads.online-go.com/4b1dd7c7ebe15df1c7e238987f080a57-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1248.3261546504805,
                        "deviation": 60.77825376756256,
                        "volatility": 0.060019056751056704
                    }
                },
                "ranking": 20.05161775251873,
                "professional": false,
                "ui_class": ""
            },
            "description": "Супер турнир группы.\nПроходит в каждом месяце.",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 91187,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "main_time": 604800,
                "period_time": 86400,
                "periods": 5
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 15695,
                "name": "тэсудзи",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 22,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2026-08-31T21:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": false,
            "exclusivity": "group",
            "started": null,
            "ended": null,
            "start_waiting": null,
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 3,
            "ranked": true
        },
        {
            "id": 83325,
            "name": "9x9 Open League #15",
            "director": {
                "id": 1015644,
                "username": "wiadp1",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1396.756996894482,
                        "deviation": 72.28963709119351,
                        "volatility": 0.060271962182201794
                    }
                },
                "ranking": 22.652509628626415,
                "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/10752",
            "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": 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": 715,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2021-12-19T21:00:00Z",
            "players_start": 10,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2021-12-14T08:14:13.368351Z",
            "ended": "2022-01-23T21:20:24.781541Z",
            "start_waiting": "2021-12-14T08:14:12.334941Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 10,
            "ranked": true
        },
        {
            "id": 66141,
            "name": "uyebrvywqptiuybit;",
            "director": {
                "id": 836874,
                "username": "NicholasD03",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/f493528ea0a3bfff700b0528c858339c?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1028.5047944967969,
                        "deviation": 71.63711526554845,
                        "volatility": 0.060081207056853145
                    }
                },
                "ranking": 15.567520953222878,
                "professional": false,
                "ui_class": ""
            },
            "description": "tvlvytliu",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "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": 6721,
                "name": "Mr. Erb's Math Class",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 19,
                "icon": "https://user-uploads.online-go.com/6910eda41e1a6a0c79cb362e854798f9-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2020-10-02T13:29:00Z",
            "players_start": 3,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-10-02T15:28:30.966003Z",
            "ended": "2020-10-08T18:59:24.720547Z",
            "start_waiting": "2020-10-02T15:28:30.772057Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/6910eda41e1a6a0c79cb362e854798f9-15.png",
            "player_count": 3,
            "ranked": true
        },
        {
            "id": 84569,
            "name": "Melee 13x13 Tournament: 2022-01-12",
            "director": {
                "id": 741522,
                "username": "wolfmeister",
                "country": "_United_Federation_of_Planets",
                "icon": "https://secure.gravatar.com/avatar/c86451e4f5aaface6118117b8b91597b?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1209.6169056480942,
                        "deviation": 65.52079638031556,
                        "volatility": 0.06013235595814508
                    }
                },
                "ranking": 19.32239564406787,
                "professional": false,
                "ui_class": ""
            },
            "description": "Play async or live via video. Your choice.",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": -1,
            "rules": "japanese",
            "time_per_move": 6720,
            "time_control_parameters": {
                "system": "absolute",
                "time_control": "absolute",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "total_time": 604800
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 6518,
                "name": "Madison Google Go",
                "summary": "Nominally a social league for the MSN site, but friendly, casual players from other sites welcome.  Make sure to join the Hangouts room, go-msn@ group for announcements!  Please send an *INTERNAL* email to the organizers to join.  We don't always notice OG",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 18,
                "icon": "https://user-uploads.online-go.com/58487116e0e161b5d171c5b31268b059-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2022-01-12T23:00:00Z",
            "players_start": 2,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-01-12T23:00:04.617516Z",
            "ended": "2022-01-31T21:42:32.555702Z",
            "start_waiting": "2022-01-12T23:00:02.743794Z",
            "board_size": 13,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/58487116e0e161b5d171c5b31268b059-15.png",
            "player_count": 10,
            "ranked": true
        },
        {
            "id": 52227,
            "name": "Final Frontier Round Robin 9x9",
            "director": {
                "id": 488500,
                "username": "Picard",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/f1c34fa096a5d8ad30ce9febb7d4870e?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1470.3231083618412,
                        "deviation": 67.06113000039035,
                        "volatility": 0.0599711398659376
                    }
                },
                "ranking": 23.840777355800686,
                "professional": false,
                "ui_class": ""
            },
            "description": "Round Robin Tournament\n\nStarts when full",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 172800,
            "time_control_parameters": {
                "system": "simple",
                "time_control": "simple",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "per_move": 172800
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 2946,
                "name": "Final Frontier",
                "summary": "Welcome to Final Frontier.\n\nWe have tons of tournaments and a magnificent director-Picard.\nPlease join this frontier soon, we are closing!",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 73,
                "icon": "https://user-uploads.online-go.com/dc9146aa65b9a001214cf5f3ed95a719-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2019-09-21T19:00:00Z",
            "players_start": 10,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2019-09-24T13:33:08.593147Z",
            "ended": "2019-10-17T19:23:28.142940Z",
            "start_waiting": "2019-09-24T13:33:03.079892Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/dc9146aa65b9a001214cf5f3ed95a719-15.png",
            "player_count": 10,
            "ranked": true
        }
    ]
}