List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-exclude_provisional&page=4885
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "username": "Jokes Time Wins :D",
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            "description": "И вот она долгожданная, тёплая пора-лето.\n\nБуду рад видеть всех, кто прийдёт на мой турнир. \n\n\n:D",
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            "description": "Test Tournament to see how this works out.\n\nI would only like low-level DDK players to join as to feel they have a chance, and not just be wiped out by the stronger Kyu players of the group.\n\nAs such, for this first test tourney- I will only allow players up to 18k to join.\n\nThank you for your time.",
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