List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=min_ranking&page=5862
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "name": "9x9 SDK tournament #3",
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                "username": "UFParrot",
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            "description": "Have fun! More details at https://online-go.com/group/10855",
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            "id": 32815,
            "name": "gopaddy singledigit kyu fest",
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                "username": "gopaddy",
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            "description": "single digit tourney\nenjoy!",
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                "summary": "Open Go club for people anywhere",
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                "summary": "Middle speed matches, not so hurry, not so slow.",
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