List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=min_ranking&page=3840
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Haverá um sorteio ao final do torneio, seguem as regras: Irei sortear uma review de partida(offline) a escolha do jogador sorteado. Caso o torneio tenha mais de 15 jogadores, irei sortear também uma partida orientada. Se o torneio tiver mais de 25 jogadores irei sortear também uma aula particular(1h-1h30m de duração) com o tema a escolha do sorteado.\n\nPara concorrer ao sorteio basta ao jogador terminar o torneio(ou seja, jogar todas as rodadas). Aqueles que forem padrinhos do meu projeto(https://www.padrim.com.br/aulasdegofhvr) e terminarem o torneio terão seu nome inserido no sorteio duas vezes.",
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                "summary": "Group for the Phenix Go club (Bruxelles, Belgium)",
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            "description": "每月第一个星期天的比赛\nDOUBLE CHANCE S1",
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            "description": "In this first experiment, we'll try to create a\n\n**Double Round-Robin**",
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            "description": "Tournament for training people with odds.",
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