List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5340
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-max_ranking&page=5339",
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            "description": "Please, avoid delaying your games using the vacation feature.\n\nAnalysis is enabled mainly to allow the use of conditional moves.",
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        {
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            "name": "Tournament 40 sdk",
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            "description": "This is a three stage tournament. Enter at your level. This is the Single Digit Kyu tournament.",
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                "name": "Global Go Club",
                "summary": "Open Go club for people anywhere",
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        {
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