List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-auto_start_on_max&page=457
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "name": "tournament",
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                "username": "kepler22b",
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            "description": "for those new at go\n(i changed it to monday so more people can join)",
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                "name": "Double Digit Kyu Room",
                "summary": "For those of us working our way through to SDK. Whether its for your first time up the ladder and the 20th, lets find some opponents and camaraderie. ",
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        {
            "id": 131968,
            "name": "19x19 Open League #99",
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            "description": "Open league for everyone. Tournament will be started as soon as 10 players will join it.\n\nPrevious winners: https://online-go.com/group/12599",
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                "name": "GO Special Tournaments",
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            "name": "Show Today GO Cup",
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                "username": "KungYo",
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            "description": "Automatic sitewide tournament",
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