List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=258
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 58934,
    "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=259",
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=257",
    "results": [
        {
            "id": 58404,
            "name": "😜vs😜",
            "director": {
                "id": 736023,
                "username": "2026vs.",
                "country": "hk",
                "icon": "https://user-uploads.online-go.com/7b00a5b491f99a02c822db43039ddd91-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1529.4955917779457,
                        "deviation": 63.196335111054026,
                        "volatility": 0.060307009572073786
                    }
                },
                "ranking": 24.754179686665076,
                "professional": false,
                "ui_class": ""
            },
            "description": "9x9 tournament",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 86400,
            "time_control_parameters": {
                "system": "simple",
                "time_control": "simple",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "per_move": 86400
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 4517,
                "name": "Master players",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 26,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2020-04-03T08:30:00Z",
            "players_start": 10,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slide",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-04-03T09:09:50.755469Z",
            "ended": "2020-04-07T10:56:01.274872Z",
            "start_waiting": "2020-04-03T09:09:50.326407Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 85268,
            "name": "9x9 Mini League 10k-25k #14",
            "director": {
                "id": 1015644,
                "username": "wiadp1",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1401.2370598298708,
                        "deviation": 70.20323760077024,
                        "volatility": 0.060178801801105894
                    }
                },
                "ranking": 22.72664384298382,
                "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",
                "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": 697,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2022-01-30T21:05:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-01-28T02:19:30.290777Z",
            "ended": "2022-02-17T17:34:02.706926Z",
            "start_waiting": "2022-01-28T02:19:30.097028Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 135981,
            "name": "DDK Room Rapid Correspondence New Year Tournament",
            "director": {
                "id": 58836,
                "username": "DrQuantum",
                "country": "us",
                "icon": "https://user-uploads.online-go.com/5192a63f12fa80c878392f9d0034612b-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1033.3946542981694,
                        "deviation": 63.26870638948352,
                        "volatility": 0.05897538674054992
                    }
                },
                "ranking": 15.677323074453883,
                "professional": false,
                "ui_class": ""
            },
            "description": "Rapid Correspondence Tournament for DDKs - 12 hours increment per move, max 3 days.  Join the fun!",
            "schedule": null,
            "title": null,
            "tournament_type": "s_mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 44568,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 43200,
                "initial_time": 172800,
                "max_time": 259200
            },
            "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": 3642,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": true,
            "time_start": "2026-01-16T16:00:00Z",
            "players_start": 8,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2026-01-31T12:01:45.349553Z",
            "ended": null,
            "start_waiting": "2026-01-31T12:01:44.951830Z",
            "board_size": 19,
            "active_round": 1,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 8,
            "ranked": true
        },
        {
            "id": 3763,
            "name": "today's conflict",
            "director": {
                "id": 73094,
                "username": "hikaru1no1go",
                "country": "pk",
                "icon": "https://user-uploads.online-go.com/321d8cdbe7db0f9c7a8fa0c3059ca751-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1582.0014365944573,
                        "deviation": 64.84465326691476,
                        "volatility": 0.06006480111490102
                    }
                },
                "ranking": 25.535556427004384,
                "professional": false,
                "ui_class": ""
            },
            "description": "everyone welcome",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 301,
            "time_control_parameters": {
                "time_control": "byoyomi",
                "period_time": 300,
                "main_time": 120,
                "periods": 3
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 489,
                "name": "神の一手",
                "summary": "tourney group",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 45,
                "icon": "https://user-uploads.online-go.com/62dba6697413715a955f5f239460b3f2-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2014-12-28T16:00:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 0,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2014-12-28T16:00:20.262624Z",
            "ended": "2014-12-28T19:07:02.440576Z",
            "start_waiting": null,
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/62dba6697413715a955f5f239460b3f2-15.png",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 46206,
            "name": "BOOT CAMP 5 \"Spring shakes\"",
            "director": {
                "id": 613097,
                "username": "SgtHartman",
                "country": "001",
                "icon": "https://user-uploads.online-go.com/b7f391461a801b84d37dbf3e927c967a-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1380.0223119640495,
                        "deviation": 79.12661578167102,
                        "volatility": 0.060006642263803506
                    }
                },
                "ranking": 22.373472223460578,
                "professional": false,
                "ui_class": ""
            },
            "description": "Spring is a great time for a good fight.",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 89280,
            "time_control_parameters": {
                "system": "fischer",
                "pause_on_weekends": true,
                "time_control": "fischer",
                "initial_time": 259200,
                "max_time": 432000,
                "time_increment": 86400,
                "speed": "correspondence"
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 3341,
                "name": "BOOT CAMP",
                "summary": "My mission is tournaments for DDK players and tournaments with a handicap for all. Play, learn, have fun!",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 32,
                "icon": "https://user-uploads.online-go.com/39f574a37d4485fec42b6089a126cc5f-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2019-04-07T23:00:00Z",
            "players_start": 8,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "strength",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2019-04-14T17:31:54.639284Z",
            "ended": "2019-08-04T14:22:10.826056Z",
            "start_waiting": "2019-04-14T17:31:54.055368Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/39f574a37d4485fec42b6089a126cc5f-15.png",
            "player_count": 8,
            "ranked": true
        },
        {
            "id": 63305,
            "name": "DDK teaching tournament",
            "director": {
                "id": 502237,
                "username": "bagelfan",
                "country": "th",
                "icon": "https://user-uploads.online-go.com/f942945e37fe5209ec40fde32c8b257d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 2172.7291670856425,
                        "deviation": 68.35081776677339,
                        "volatility": 0.06012718193379842
                    }
                },
                "ranking": 32.880895872583366,
                "professional": false,
                "ui_class": ""
            },
            "description": "If you want to get your tournament game reviewed, please message me!",
            "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",
                "pause_on_weekends": true,
                "time_increment": 86400,
                "initial_time": 259200,
                "max_time": 604800
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 865,
                "name": "OGS Teaching Ladder",
                "summary": "Teach the weaker, learn from the stronger",
                "require_invitation": true,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 652,
                "icon": "https://user-uploads.online-go.com/24ecd9d9f2f78df3b3e6b5f90732b0e3-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2020-07-31T13:00:00Z",
            "players_start": 20,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-07-31T13:00:50.713868Z",
            "ended": "2021-07-26T04:29:02.261707Z",
            "start_waiting": "2020-07-31T13:00:48.557699Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/24ecd9d9f2f78df3b3e6b5f90732b0e3-15.png",
            "player_count": 35,
            "ranked": true
        },
        {
            "id": 137088,
            "name": "13x13 Mini League 10k-25k #48",
            "director": {
                "id": 1688153,
                "username": "Mittelmark",
                "country": "de",
                "icon": "https://user-uploads.online-go.com/f86d53e1b08ba490783eac759518a835-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1085.853799560171,
                        "deviation": 67.3768163524415,
                        "volatility": 0.060025167068784406
                    }
                },
                "ranking": 16.823651478136373,
                "professional": false,
                "ui_class": "supporter"
            },
            "description": "A little round robin with 4 games for everyone on a 13x13 board with (not too) relaxed time settings.",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 93703,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "time_increment": 86400,
                "initial_time": 432000,
                "max_time": 1209600
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 161,
                "name": "13x13",
                "summary": "Like to play on a 13 x 13 board?",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 57,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": true,
            "time_start": "2026-02-13T21:00:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2026-02-11T16:05:30.938820Z",
            "ended": null,
            "start_waiting": "2026-02-11T16:05:30.535464Z",
            "board_size": 13,
            "active_round": 1,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 69054,
            "name": "4th Beginners 9x9 Championship Group A",
            "director": {
                "id": 750750,
                "username": "begingo1000",
                "country": "ez",
                "icon": "https://secure.gravatar.com/avatar/d705f1ba732fe17b3a05d20723059c83?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1317.1885810619165,
                        "deviation": 64.49012040956917,
                        "volatility": 0.06003208049018038
                    }
                },
                "ranking": 21.294680724602816,
                "professional": false,
                "ui_class": ""
            },
            "description": "Welcome to the 4th Beginners 9x9 Championship! This time the championship is expanded to 3 groups, each consisting of a round-robin tournament. Each tournament is equivalent and the winners, runners-up and two best third placed players of each tournament will qualify to a final-8 knockout tournament.\n\nIMPORTANT NOTES\n\nIf you do not manage to join a specific group you can join one of the remaining ones if there are still vacant places.\nPlayers with ranking between 10-25 kyu are allowed to join the tournament.\nEach player should join a SINGLE group. If someone joins two or more groups, the tournament manager will remove him/her automatically.",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 88320,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 86400,
                "initial_time": 172800,
                "max_time": 432000
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 4957,
                "name": "Beginners 9x9",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": true,
                "member_count": 32,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": false,
            "time_start": "2020-12-23T12:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-12-23T12:00:33.784394Z",
            "ended": "2021-01-21T12:40:30.456447Z",
            "start_waiting": "2020-12-23T12:00:32.769068Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 10,
            "ranked": true
        },
        {
            "id": 65919,
            "name": "happy friday",
            "director": {
                "id": 769861,
                "username": "rainncat",
                "country": "us",
                "icon": "https://user-uploads.online-go.com/63b1a39787f99d6149e4e1cb7cc755f5-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 975.0308630931373,
                        "deviation": 65.62894696966373,
                        "volatility": 0.060026784983209604
                    }
                },
                "ranking": 14.331490463627786,
                "professional": false,
                "ui_class": ""
            },
            "description": "have fun!",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "handicap": 0,
            "rules": "chinese",
            "time_per_move": 262080,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "time_increment": 259200,
                "initial_time": 259200,
                "max_time": 864000
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 6843,
                "name": "bunny and squirrel",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 17,
                "icon": "https://user-uploads.online-go.com/4fbbe44d15fe786fd4c4d0d540f0ee05-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2020-10-03T00:00:00Z",
            "players_start": 5,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "slide",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-10-03T00:00:56.930823Z",
            "ended": "2023-05-01T15:51:48.128953Z",
            "start_waiting": "2020-10-03T00:00:56.443926Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/4fbbe44d15fe786fd4c4d0d540f0ee05-15.png",
            "player_count": 20,
            "ranked": true
        },
        {
            "id": 72093,
            "name": "Double Elimination Correspondence",
            "director": {
                "id": 948618,
                "username": "Cytotoxic",
                "country": "001",
                "icon": "https://secure.gravatar.com/avatar/93b831c6ff5897a3ddf5c94f8186165f?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 941.3854831062848,
                        "deviation": 69.58805356584392,
                        "volatility": 0.05998000692685948
                    }
                },
                "ranking": 13.518545418402388,
                "professional": false,
                "ui_class": ""
            },
            "description": "A simple correspondence tourney",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "handicap": -1,
            "rules": "aga",
            "time_per_move": 6720,
            "time_control_parameters": {
                "system": "absolute",
                "time_control": "absolute",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "total_time": 604800
            },
            "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": 3642,
                "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
            },
            "auto_start_on_max": true,
            "time_start": "2021-03-03T17:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slide",
            "min_ranking": 5,
            "max_ranking": 20,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2021-03-03T17:00:53.944212Z",
            "ended": "2021-04-01T13:08:24.081359Z",
            "start_waiting": "2021-03-03T17:00:53.702830Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 4,
            "ranked": true
        }
    ]
}