List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-subsequent_pairing_method&page=5897
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "おそらく、今年最後のOGSトーナメントかと。皆様のご参加お待ちしています。前回同様スイス方式で開催させて頂きます。",
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            "description": "3回目のトーナメントです。",
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}