List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-subsequent_pairing_method&page=5333
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "Jouer des parties pour s'amuser, voila l'objectif de ce tournoi!\nLa taille du plateau est de 19x19. Si cela vous dérange ou que vous préférez une autre taille de plateau, venez me voir. \nBon tournoi!!!",
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