List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-auto_start_on_max&page=248
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Time to make more rounds and segments! Have a nice play",
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            "name": "4 Players Malkovich Round Robin 6k-1k",
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        {
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                "username": "ogo32217",
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