List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=handicap&page=81
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Go es equilibrio. Go es cálculo. Go es creatividad. Go es violencia. Go es un laberinto. Go es filosofía. ¿Qué es Go para ti?",
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            "description": "Like tournaments? Why not join this one?",
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                "name": "Group for GO",
                "summary": "Don't have a group? No problem, just join this group!",
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