List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=name&page=390
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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                "summary": "For go players who live in Zimbabwe/have Zimbabwe heritage. We always welcome new members!",
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            "description": "<strong>Our first ever tournament!</strong> Hopefully, most of our group will participate to make this interesting. This is a 19x19 correspondence tournament. <u>Losing a round means elimination.</u> Stronger players will be paired up with weaker ones, so be nice. \n\n-<font face=\"courier\" color=#aa66aa>KYU2</font>  :P",
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                "name": "KYU2's League",
                "summary": "This group will be great when there's more people!",
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            "name": "4-4 study.",
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