List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=109
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "group": {
                "id": 13655,
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            "subsequent_pairing_method": "slaughter",
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            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-04-11T06:56:24.114536Z",
            "ended": "2025-07-16T06:29:10.266671Z",
            "start_waiting": "2025-04-11T06:56:23.982388Z",
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    ]
}