List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-exclude_provisional&page=4952
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "name": "7 Entrenamiento de go, febrero 2021",
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            "description": "https://kido-go.com/",
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        {
            "id": 93221,
            "name": "劉沛祥 岑SIR",
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                "id": 818416,
                "username": "傳碁學園",
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            "description": "劉沛祥 岑SIR",
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            "name": "9x9 Open D.E. Cup #218",
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                "id": 1015644,
                "username": "wiadp1",
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