List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-subsequent_pairing_method&page=475
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "analysis_enabled": false,
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            "started": "2009-05-01T13:31:01Z",
            "ended": "2009-05-01T11:31:01Z",
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}