List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=75
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-max_ranking&page=74",
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            "description": "Evento Oficial da Rede Municipal de Ensino",
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            "description": "Ok so a lot of people can’t enter the last one so I re-created it.",
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