List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-players_start&page=817
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "subsequent_pairing_method": "strength",
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                },
                "next_run": "2026-04-18T19:00:00Z",
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            },
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            "ended": "2022-10-08T20:33:08.291515Z",
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}