List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=min_ranking&page=5832
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Enjoy!",
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                "summary": "2 days per move. No Analysis.",
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                "hide_details": false,
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            "subsequent_pairing_method": "slaughter",
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            "max_ranking": 29,
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            "started": "2020-09-01T23:00:49.494853Z",
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