List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=players_start&page=128
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "id": 2509,
                "name": "Kyu Clash",
                "summary": "Where Kyu Level Go Streamers Face Off! https://twitch.tv/kyuclash",
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