List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-exclude_provisional&page=5755
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "Every bots and every people’s can come!\n\n <big><big>*NOT ADVERTISEMENT*</big></big> result in report\n\n<h1>   WELCOME. </h1>\n<link rel=\"stylesheet\" type=\"text/css\" href=\"https://yewang.github.io/ProfileCSS/profile.css\">",
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