Cage Force

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Cage Force (former name Demolition Octagon Gear (D.O.G.)) is a defunct Japanese Mixed Martial Arts (MMA) organization operated by Greatest Common Multiple (GCM) Communication. It was the first Japanese MMA organization to feature an octagon cage instead of a ring. Yushin Okami, Eiji Mitsuoka, Kuniyoshi Hironaka and Keita Nakamura experienced a cage match in D.O.G before contract with UFC.^[1] It enforced the Unified Rules of Mixed Martial Arts when the changed name to "Cage Force" from "D.O.G.", to prepare Japanese MMA fighters for the UFC.^[2] Cage Force tournament winner was entitled to a contract with UFC. Yoshiyuki Yoshida and Takeya Mizugaki have been contracted to the UFC and WEC by winning the tournament.