List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5300
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "name": "EQUAL TOURNAMENT",
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                "username": "oimena90👺",
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            "description": "tournament with handicap system",
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                "name": "Italian Group",
                "summary": "Questo è un gruppo creato per raccogliere tutti i giocatori italiani 😜",
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            "description": "<h2>Rules</h2>\n\n<ul>\n\n\n<li>Pausing or Vacation setting is looked on as resigning all the rest games, resulting in \"Lost by Disqualification\" in the current game.</li>\n\n</ul>",
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        {
            "id": 93769,
            "name": "9x9 Mini League 1k-9k #38",
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                "username": "wiadp1",
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                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
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            "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",
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                "id": 3524,
                "name": "9x9 Lovers",
                "summary": "A group for Go players who love the 9x9 board.",
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        },
        {
            "id": 43518,
            "name": "Another cookie tournament (9X9)",
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                "id": 434287,
                "username": "plunco123",
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            "description": "This is a continuation of the first cookie tournament\n\nAt least 100 players\n\nPairing by strength\n\nONLY KYU LEVELS NO DANS (With provisional players)",
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                "name": "Singapore Go Group",
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                "name": "OGS Mini Tournaments",
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        {
            "id": 71914,
            "name": "#019 🐩 Sunday Correspondence19×19 RoundRobin",
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            "description": "開始時に挨拶もしないような人は参加しないでね。",
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                "name": "Dogs fun",
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        {
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            "description": "Просто турнир поиграть, Just a tournament to play",
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                "max_time": 1200
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                "id": 12100,
                "name": "GoBanDit+",
                "summary": "Заходи в группу тут много интересного,заранее спасибо))\nCome to the group here a lot of interesting things, thank you in advance))",
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        {
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            "name": "SDK Battle 1",
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            "description": "Fast correspondence. Does NOT pause on weekends.\n\nDue to the recent rank changes on the site, I've changed this tournament to be SDK-only (see https://forums.online-go.com/t/2021-rating-and-rank-adjustments/33389)",
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