His first fight came against England's Rob Broughton on April 29, where he recorded the first loss of his career.
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On May 7, 2010, Kawaguchi faced 5-time World's Strongest Man Mariusz Pudzianowski at KSW XIII: Kumite in Katowice, Poland.
Yusuke Naora | Yusuke Murata | Yusuke Hagihara | Yusuke Kanamaru | Yusuke Hayashi | Yoriko Kawaguchi | Kiyotake Kawaguchi | Kaiji Kawaguchi |