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Yoneyama won the Pure-J Openweight Championship once. The Pure-J Openweight Championship is a professional wrestling championship owned by the Japanese promotion Pure-J. It is the promotion's top championship and has been held by a total of 13 wrestlers. Yoneyama won the championship on July 21, 2008, by defeating Daisuke Sekimoto. He held the championship for 146 days before losing it to Kengo Mashimo on December 14, 2008.