Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments?format=api&ordering=rules&page=5476
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"このトーナメントは下記の方が参加予定です。空きがないため参加者となっていない方は参加することができません。\n\nThis tournament have already been “reserved” for members listed below. If you are not one among them, don’t click “Join this tournament!”. 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