List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=max_ranking&page=129
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "summary": "A group for Go players who love the 9x9 board.",
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                "summary": "A group so low-rating 30k's can find each other, play against each other, and beat each other. Everyone deserves an approximately 50/50 win rate.",
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            "exclusivity": "open",
            "started": "2016-01-24T17:47:24.328056Z",
            "ended": "2018-12-10T15:50:02.312383Z",
            "start_waiting": "2016-01-24T17:47:23.887257Z",
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}