List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=324
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 60684,
    "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=325",
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=323",
    "results": [
        {
            "id": 60669,
            "name": "Lions 9 SE - June 2020",
            "director": {
                "id": 768968,
                "username": "Lvica",
                "country": "_United_Federation_of_Planets",
                "icon": "https://user-uploads.online-go.com/c301d268049b281ea7e98cb2f3b4ef90-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1243.8558799992447,
                        "deviation": 65.24724439158334,
                        "volatility": 0.059985769000629845
                    }
                },
                "ranking": 19.96856846661209,
                "professional": false,
                "ui_class": ""
            },
            "description": "SE, 9x9",
            "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",
                "time_increment": 86400,
                "initial_time": 259200,
                "max_time": 604800
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 5761,
                "name": "Group of Lions",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 1,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2020-06-01T20:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-06-01T20:00:47.958681Z",
            "ended": "2020-06-23T07:17:44.458293Z",
            "start_waiting": "2020-06-01T20:00:47.725056Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 9631,
            "name": "Hane Naoki (羽根 直樹) Birthday Tournament",
            "director": {
                "id": 58836,
                "username": "DrQuantum",
                "country": "us",
                "icon": "https://user-uploads.online-go.com/5192a63f12fa80c878392f9d0034612b-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 951.8996446108213,
                        "deviation": 61.18786661534284,
                        "volatility": 0.05899163675392068
                    }
                },
                "ranking": 13.775670283020684,
                "professional": false,
                "ui_class": ""
            },
            "description": "This Round Robin Tournament is set to begin on the birthday of Nihon Ki-in professional Hane Naoki-san, 9-dan.",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 89280,
            "time_control_parameters": {
                "time_control": "fischer",
                "initial_time": 259200,
                "max_time": 604800,
                "time_increment": 86400
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 24,
                "name": "Double Digit Kyu Room",
                "summary": "For those of us working our way through to SDK. Whether its for your first time up the ladder and the 20th, lets find some opponents and camaraderie. ",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 3686,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2015-08-14T11:00:00Z",
            "players_start": 4,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 0,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2015-08-14T11:00:37.416572Z",
            "ended": "2015-12-11T00:54:03.553056Z",
            "start_waiting": "2015-08-14T11:00:36.256730Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 10,
            "ranked": true
        },
        {
            "id": 132978,
            "name": "Sente Tournament I",
            "director": {
                "id": 1864817,
                "username": "deleted-ba270c1d-aa26-4fac-a578-8278ec42074b",
                "country": "in",
                "icon": "https://user-uploads.online-go.com/bb787adbae7adc2413690d0457ee60b4-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 317.79726823308874,
                        "deviation": 70.2348941694934,
                        "volatility": 0.06004692912331622
                    }
                },
                "ranking": 5,
                "professional": false,
                "ui_class": ""
            },
            "description": "This is a new weekly tournament",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": -1,
            "rules": "japanese",
            "time_per_move": 4787,
            "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": 15743,
                "name": "The Aji Union (+25k Beginners)",
                "summary": "This group is open for all and beginner friendly. If you do not wish to join this group try the The Opening Tournament on Oct 7th, it is called The Aji Tournament!",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 20,
                "icon": "https://user-uploads.online-go.com/4a4eaae21c0ccdddb0b5e26d211af026-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2025-10-10T13:30:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-10-10T13:30:35.136413Z",
            "ended": "2025-12-15T03:26:39.548611Z",
            "start_waiting": "2025-10-10T13:30:34.760272Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/4a4eaae21c0ccdddb0b5e26d211af026-15.png",
            "player_count": 12,
            "ranked": true
        },
        {
            "id": 120310,
            "name": "9x9 New Zealand 25k-10k League #18",
            "director": {
                "id": 178104,
                "username": "dexonsmith",
                "country": "ca",
                "icon": "https://user-uploads.online-go.com/448e520df4ffd817b1802a450a4c9058-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1390.7732166446785,
                        "deviation": 67.55416504748428,
                        "volatility": 0.06064009346038413
                    }
                },
                "ranking": 22.55312076827671,
                "professional": false,
                "ui_class": "supporter"
            },
            "description": "25k-10k. 5 players. Starts only when full.\n\nNew Zealand rules. 9x9 board. Even games. Round robin.\n\nFor more tournaments and ladders with New Zealand rules: <https://online-go.com/group/14024>",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "nz",
            "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": true,
            "group": {
                "id": 14024,
                "name": "New Zealand Ladders",
                "summary": "Group for ladders and tournaments that use New Zealand rules.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": true,
                "hide_details": false,
                "member_count": 80,
                "icon": "https://user-uploads.online-go.com/6d3f1240da125f52148d02ea549146da-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2024-10-01T03:09:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2024-09-30T10:26:29.943582Z",
            "ended": "2024-10-20T05:26:33.673396Z",
            "start_waiting": "2024-09-30T10:26:29.767658Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/6d3f1240da125f52148d02ea549146da-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 21,
            "name": "Beginner Level Kyus",
            "director": {
                "id": 1064,
                "username": "rising.star",
                "country": "us",
                "icon": "https://secure.gravatar.com/avatar/a6d83fbe250f0d1ddb914408f8efc866?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1399.8981309238998,
                        "deviation": 84.29213518491775,
                        "volatility": 0.06001290743754847
                    }
                },
                "ranking": 22.704512667997182,
                "professional": false,
                "ui_class": ""
            },
            "description": "Only double digit Kyus",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "handicap": -1,
            "rules": "japanese",
            "time_per_move": 0,
            "time_control_parameters": {
                "time_control": "none"
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 43,
                "name": "Kyu Level Study Group",
                "summary": "A group for kyu level players! Join, play tournaments, and have fun. Thanks for being a part of our community!",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 8950,
                "icon": "https://user-uploads.online-go.com/36b3f6c2ac8b8f0da8b168b3cc142a1b-64.png"
            },
            "auto_start_on_max": false,
            "time_start": null,
            "players_start": null,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 0,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2013-07-29T20:23:16.124462Z",
            "ended": "2013-09-29T00:17:47.769033Z",
            "start_waiting": null,
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/36b3f6c2ac8b8f0da8b168b3cc142a1b-15.png",
            "player_count": 0,
            "ranked": true
        },
        {
            "id": 132463,
            "name": "9x9 Mini League 10k-25k #326",
            "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": "Special league for players between 25kyu and 10kyu. Tournament will be started as soon as 5 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": true,
            "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": 716,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2025-09-21T19:05:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-09-20T17:52:39.605588Z",
            "ended": "2025-11-10T01:23:26.415916Z",
            "start_waiting": "2025-09-20T17:52:39.449551Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 94848,
            "name": "9x9 Mini League 10k-25k #87",
            "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": "Special league for players between 25kyu and 10kyu. Tournament will be started as soon as 5 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": 89280,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 86400,
                "initial_time": 259200,
                "max_time": 604800
            },
            "is_open": true,
            "exclude_provisional": true,
            "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": 716,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2022-09-25T20:05:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-09-22T17:28:31.096403Z",
            "ended": "2022-10-16T08:32:47.334371Z",
            "start_waiting": "2022-09-22T17:28:30.902742Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 475,
            "name": "annamette's mini-tournament",
            "director": {
                "id": 7588,
                "username": "annamette",
                "country": "nl",
                "icon": "https://user-uploads.online-go.com/d2e186ae078de844c1dcfc9fad3ee00a-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1428.4462609602026,
                        "deviation": 62.66437957865078,
                        "volatility": 0.06071334000718151
                    }
                },
                "ranking": 23.171861451618014,
                "professional": false,
                "ui_class": ""
            },
            "description": "",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": -1,
            "rules": "japanese",
            "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": 386,
                "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": 20,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2008-06-19T06:21:58Z",
            "ended": "2008-06-19T04:21:58Z",
            "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": 98617,
            "name": "9x9 Mini League 10k-25k #116",
            "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": "Special league for players between 25kyu and 10kyu. Tournament will be started as soon as 5 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",
                "pause_on_weekends": false,
                "time_increment": 86400,
                "initial_time": 259200,
                "max_time": 604800
            },
            "is_open": true,
            "exclude_provisional": true,
            "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": 716,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2023-01-08T20:10:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2023-01-07T03:33:49.359720Z",
            "ended": "2023-02-08T07:33:30.823615Z",
            "start_waiting": "2023-01-07T03:33:49.211478Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 74214,
            "name": "Town center ogs",
            "director": {
                "id": 750171,
                "username": "KHAE",
                "country": "th",
                "icon": "https://user-uploads.online-go.com/56d33c7e8e7ce67f73aa947fd300727b-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1287.039113571418,
                        "deviation": 62.03202260607443,
                        "volatility": 0.06028614816374175
                    }
                },
                "ranking": 20.758635924188564,
                "professional": false,
                "ui_class": ""
            },
            "description": "Town center \nMonth steep \nWeirding woods\nGiddy park\nZomboss hq\nDave manor\nPlants vs zombies",
            "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": 455,
                "name": "Hockinson Go",
                "summary": "HHS Go Group",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 2,
                "icon": "https://user-uploads.online-go.com/2460624ac7c05eb2b0657f279b97c9f0-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2021-04-21T09:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2021-04-22T09:39:31.055109Z",
            "ended": "2021-05-05T08:51:59.707674Z",
            "start_waiting": "2021-04-22T09:39:30.930293Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/2460624ac7c05eb2b0657f279b97c9f0-15.png",
            "player_count": 4,
            "ranked": true
        }
    ]
}