List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-subsequent_pairing_method&page=4884
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "name": "Kyu Level Study Group",
                "summary": "A group for kyu level players! Join, play tournaments, and have fun. Thanks for being a part of our community!",
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                "username": "Ironwoman",
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            "description": "This is the first ASPEP-HERO tournament.",
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            "id": 61224,
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            "description": "ორ წაგებაზე გავარდნა",
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