List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-exclude_provisional&page=5634
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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                "username": "ZRSSDann",
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            "description": "Please join this tournament as a \"celebration\" for Primary students!",
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                "username": "Arctic fox 極の大理石狐",
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            "description": "輕鬆暑期活動",
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                "id": 3852,
                "name": "Hong Kong ",
                "summary": "First priority : HK people join plz                                                                     \nThis group welcomes everyone, but only if you don't be rude.",
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                "require_invitation": false,
                "is_public": true,
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        {
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