List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=540
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 59630,
    "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=541",
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=539",
    "results": [
        {
            "id": 138502,
            "name": "RS: The Battlefield of Single Digit",
            "director": {
                "id": 1776211,
                "username": "MAESTRO of BADUK",
                "country": "kr",
                "icon": "https://user-uploads.online-go.com/2de231e0b190d65fe2d68b51bd7b4b2a-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1743.7165314872339,
                        "deviation": 67.09017038578307,
                        "volatility": 0.06002267258168044
                    }
                },
                "ranking": 27.788699524182118,
                "professional": false,
                "ui_class": ""
            },
            "description": "This is for players who want to enjoy fast correspondence match \n\nSingle Elimination for 18k~1k\n\nStart time: 1day \n\nFischer:: 6 hours\n\nMax. Time: 2 days\n\n*****\nRestricted Rank: 1k \n\nPlayers who reached 1 dan within 30 days before the tournament announcement date but have since dropped back to 1k are not eligible to participate. (Reference date: 30 days prior to Feb.21.2026 )\n\n*****\nThe winner will receive a seeded invitation to the main tournament of Road to Dan, a regular tournament hosted by the RS group. \n\n(We recommend you to be a member of the RS group to receive an invitation. According to the OGS system, we cannot send invitations to non-members.)\n\n*****\nBe careful below the rule;\n\nPlease make sure to disable the automatic vacation mode in your personal settings. https://online-go.com/settings/vacation\n\nNO PAUSE & NO VACATION, anyone who takes on the vacation or pauses a game, will be disqualified.\n\nPlease send the tournament director a message if you find that your opponent pauses or turns vacation mode on. \n*****",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "korean",
            "time_per_move": 22284,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 21600,
                "initial_time": 86400,
                "max_time": 172800
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 15815,
                "name": "RollingStones : Global & 한국인",
                "summary": "한국인 대환영. 한국인과 글로벌 유저들을 위한 모임, We are connected all together.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": true,
                "hide_details": false,
                "member_count": 71,
                "icon": "https://user-uploads.online-go.com/2de231e0b190d65fe2d68b51bd7b4b2a-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2026-03-28T18:00:00Z",
            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 12,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2026-03-28T16:21:31.692152Z",
            "ended": null,
            "start_waiting": "2026-03-28T16:21:30.470500Z",
            "board_size": 19,
            "active_round": 2,
            "icon": "https://user-uploads.online-go.com/2de231e0b190d65fe2d68b51bd7b4b2a-15.png",
            "player_count": 32,
            "ranked": true
        },
        {
            "id": 90877,
            "name": "9x9 Mini League 1k-9k #24",
            "director": {
                "id": 1015644,
                "username": "wiadp1",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1270.6887600601435,
                        "deviation": 69.91037894292256,
                        "volatility": 0.06021489996527836
                    }
                },
                "ranking": 20.462657729095017,
                "professional": false,
                "ui_class": ""
            },
            "description": "Special league for players between 9kyu and 1kyu. 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": 697,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2022-06-12T20:00:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 21,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-06-08T16:57:23.720489Z",
            "ended": "2022-08-08T11:40:29.040134Z",
            "start_waiting": "2022-06-08T16:57:23.535245Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 71735,
            "name": "Handicap Shmaaaaaaaaaandicap SDK Tournament",
            "director": {
                "id": 517520,
                "username": "reverser",
                "country": "_United_Federation_of_Planets",
                "icon": "https://secure.gravatar.com/avatar/75c9d10e90a7149007f5f1188005ffc9?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1902.6011580125187,
                        "deviation": 65.72562005909023,
                        "volatility": 0.06016024522197854
                    }
                },
                "ranking": 29.80745377656669,
                "professional": false,
                "ui_class": ""
            },
            "description": "Whoever that wins is the best!",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": -1,
            "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": 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": 8886,
                "icon": "https://user-uploads.online-go.com/36b3f6c2ac8b8f0da8b168b3cc142a1b-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2021-02-28T03:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 21,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2021-02-22T18:43:47.990627Z",
            "ended": "2021-06-05T01:19:32.929551Z",
            "start_waiting": "2021-02-22T18:43:47.625149Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/36b3f6c2ac8b8f0da8b168b3cc142a1b-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 87235,
            "name": "SDK DDK Ultra Fast Handicap 5",
            "director": {
                "id": 886972,
                "username": "Babbo Bruno",
                "country": "us",
                "icon": "https://user-uploads.online-go.com/3a86884a3c89d9e4d9b53b217b0675cf-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1070.9385838726466,
                        "deviation": 64.8334893945754,
                        "volatility": 0.05979839272165313
                    }
                },
                "ranking": 16.503460485001295,
                "professional": false,
                "ui_class": "supporter"
            },
            "description": "Please note extremely aggressive time controls. You must make at least six plays per day.",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 17280,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "time_increment": 14400,
                "initial_time": 259200,
                "max_time": 259200
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 508,
                "name": "Fast Correspondence",
                "summary": "Tournaments for people who like to play quick correspondence games.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 821,
                "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2022-03-19T16:00:00Z",
            "players_start": 4,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 10,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-03-18T07:50:57.363088Z",
            "ended": "2022-06-19T16:10:11.736898Z",
            "start_waiting": "2022-03-18T07:50:57.156596Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-15.png",
            "player_count": 16,
            "ranked": true
        },
        {
            "id": 45295,
            "name": "おおかみクラス【 楽人リーグ戦 】",
            "director": {
                "id": 582205,
                "username": "さかもと",
                "country": "jp",
                "icon": "https://user-uploads.online-go.com/a4fd22623c4d90b173eef890e634934d-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1806.4877161432678,
                        "deviation": 141.8396152914018,
                        "volatility": 0.06002488366424099
                    }
                },
                "ranking": 28.607415450972766,
                "professional": false,
                "ui_class": ""
            },
            "description": "おおかみクラス 対象棋力:4級~1級\n\n挨拶はしっかり! マナーを守って楽しく対局しましょう!\n\n定員の10名になりお申し込みができない場合は、 2月12日(火)19時までに、トーナメント掲示板 あるいは グループ管理者にお知らせください。 2回負け抜けトーナメントに変更いたします。",
            "schedule": null,
            "title": null,
            "tournament_type": "roundrobin",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 44160,
            "time_control_parameters": {
                "system": "fischer",
                "pause_on_weekends": true,
                "time_control": "fischer",
                "initial_time": 86400,
                "max_time": 172800,
                "time_increment": 43200,
                "speed": "correspondence"
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 3048,
                "name": "【 公式 】楽人リーグ戦",
                "summary": "",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 37,
                "icon": "https://user-uploads.online-go.com/b602a3a4c62da69475b1f2bf4b93d4a1-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2019-02-15T10:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2019-02-15T19:05:36.836530Z",
            "ended": "2019-02-27T23:45:41.686289Z",
            "start_waiting": "2019-02-15T19:05:36.180782Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/b602a3a4c62da69475b1f2bf4b93d4a1-15.png",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 106252,
            "name": "go championship 1",
            "director": {
                "id": 1393499,
                "username": "Imtiyaz",
                "country": "th",
                "icon": "https://user-uploads.online-go.com/56a672954f96d68180eb8444196aec12-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1033.3159040216926,
                        "deviation": 64.37615916895315,
                        "volatility": 0.06003245003586803
                    }
                },
                "ranking": 15.675558851695177,
                "professional": false,
                "ui_class": ""
            },
            "description": "be a go champion join the tournament",
            "schedule": null,
            "title": null,
            "tournament_type": "elimination",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 62,
            "time_control_parameters": {
                "system": "byoyomi",
                "time_control": "byoyomi",
                "speed": "live",
                "pause_on_weekends": false,
                "main_time": 900,
                "period_time": 30,
                "periods": 3
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 25,
                "name": "Go Basics",
                "summary": "A learning and teaching environment for players of all strengths with emphasis on tournaments and game reviews. Come teach, learn, and have fun!",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 17956,
                "icon": "https://user-uploads.online-go.com/88a1228e25c41184ceaf4c4683299256-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2023-08-09T06:00:00Z",
            "players_start": 2,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2023-08-09T06:00:54.804516Z",
            "ended": "2023-08-09T06:08:19.576127Z",
            "start_waiting": "2023-08-09T06:00:54.698574Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/88a1228e25c41184ceaf4c4683299256-15.png",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 25571,
            "name": "Sochi 03/2017",
            "director": {
                "id": 94239,
                "username": "Tranquil",
                "country": "ru",
                "icon": "https://user-uploads.online-go.com/f47b0eccaf470cc69e0ffb7e08510237-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1250.4881729175397,
                        "deviation": 61.459022725358544,
                        "volatility": 0.059715693644470755
                    }
                },
                "ranking": 20.091677339835478,
                "professional": false,
                "ui_class": ""
            },
            "description": "Турнир для всех.",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": -1,
            "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": true,
            "group": {
                "id": 904,
                "name": "Sochi",
                "summary": "",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 18,
                "icon": "https://user-uploads.online-go.com/c92c1c242ab9cb3d4a090255ebad1f0e-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2017-04-07T18:00:00Z",
            "players_start": 20,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 0,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2017-04-07T19:05:44.123904Z",
            "ended": "2019-02-25T02:12:33.632140Z",
            "start_waiting": "2017-04-07T19:05:15.918021Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/c92c1c242ab9cb3d4a090255ebad1f0e-15.png",
            "player_count": 33,
            "ranked": true
        },
        {
            "id": 84962,
            "name": "19x19 Competition",
            "director": {
                "id": 1065846,
                "username": "OreoHam777",
                "country": "nz",
                "icon": "https://secure.gravatar.com/avatar/001a38e123f0edfca9543faacae7865f?s=64&d=retro",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1442.0911710199657,
                        "deviation": 60.525251779380696,
                        "volatility": 0.05994262403078612
                    }
                },
                "ranking": 23.391947100744954,
                "professional": false,
                "ui_class": ""
            },
            "description": "Hi! This competition will be held on 1st Feb! Have fun everyone!",
            "schedule": null,
            "title": null,
            "tournament_type": "s_mcmahon",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 15360,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "time_increment": 14400,
                "initial_time": 86400,
                "max_time": 259200
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 10855,
                "name": "⚫️The Brilliant World Of OGS⚪️",
                "summary": "Are you an OGS fan? If you are, join this group where there’s great tournaments and games to be played.\n\nPeople and bots can chat and play in this group. This is a public group so all are welcome to join.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 192,
                "icon": "https://user-uploads.online-go.com/0e618bdf660c5ca247f547082c39f943-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2022-02-01T04:00:00Z",
            "players_start": 2,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 20,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2022-02-01T04:00:52.377662Z",
            "ended": "2022-06-17T11:35:22.820194Z",
            "start_waiting": "2022-02-01T04:00:51.523011Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/0e618bdf660c5ca247f547082c39f943-15.png",
            "player_count": 12,
            "ranked": true
        },
        {
            "id": 71591,
            "name": "6 Entrenamiento de go, Febrero 2021",
            "director": {
                "id": 607938,
                "username": "kido.go.baduk",
                "country": "mx",
                "icon": "https://user-uploads.online-go.com/83ceb7eea12991c2d610032107296fa7-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 733.7386350417765,
                        "deviation": 67.58441146641512,
                        "volatility": 0.06059085558486428
                    }
                },
                "ranking": 7.749569442835256,
                "professional": false,
                "ui_class": ""
            },
            "description": "https://kido-go.com/",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "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": 3
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 4974,
                "name": "Taller de Go-Biblioteca de México",
                "summary": "Torneos todos los sábados a las 17:30 hrs (Ciudad de México)",
                "require_invitation": false,
                "is_public": false,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 236,
                "icon": "https://user-uploads.online-go.com/319cd1b5d5788d57faf6978158a6f97d-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2021-02-20T23:30:00Z",
            "players_start": 4,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
            "min_ranking": 5,
            "max_ranking": 29,
            "analysis_enabled": false,
            "exclusivity": "group",
            "started": "2021-02-20T23:30:17.865999Z",
            "ended": "2021-02-21T01:13:10.947087Z",
            "start_waiting": "2021-02-20T23:30:17.554068Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/319cd1b5d5788d57faf6978158a6f97d-15.png",
            "player_count": 12,
            "ranked": true
        },
        {
            "id": 90630,
            "name": "Live 9x9 Double Elimination Tournament, Brasil",
            "director": {
                "id": 710628,
                "username": "TalesMelo",
                "country": "br",
                "icon": "https://user-uploads.online-go.com/6e4f67d3c04713fe600fd6785798c69b-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1363.4459167215687,
                        "deviation": 71.44009203402867,
                        "volatility": 0.060001304966852076
                    }
                },
                "ranking": 22.093718140090214,
                "professional": false,
                "ui_class": ""
            },
            "description": "Japanese Byo-Yomi: Clock starts with 5 minutes main time.",
            "schedule": null,
            "title": null,
            "tournament_type": "double_elimination",
            "handicap": -1,
            "rules": "japanese",
            "time_per_move": 13,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "live",
                "pause_on_weekends": false,
                "time_increment": 10,
                "initial_time": 300,
                "max_time": 300
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 1527,
                "name": "Brasil",
                "summary": "Ponto de encontro dos jogadores brasileiros",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": true,
                "hide_details": false,
                "member_count": 491,
                "icon": "https://user-uploads.online-go.com/94104bdcbaa52ac8e424a6fb2a6b03a4-64.png"
            },
            "auto_start_on_max": false,
            "time_start": "2022-05-29T20:00:00Z",
            "players_start": 2,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "random",
            "min_ranking": 5,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2022-06-12T23:56:50.439432Z",
            "ended": "2022-06-13T00:02:23.192641Z",
            "start_waiting": "2022-06-12T23:56:50.295610Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/94104bdcbaa52ac8e424a6fb2a6b03a4-15.png",
            "player_count": 2,
            "ranked": true
        }
    ]
}