List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-rules&page=5990
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "id": 26785,
            "name": "9 x 9 . 20117 . 05 . 02",
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            "description": "ღია  ტურნირი",
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        {
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