is a former Japanese football player.
Playing career Koyama was born in Tamba-Sasayama on December 27, 1982. After graduating from high school, he joined the J1 League club JEF United Ichihara in 2001. However he could hardly play in the match until 2003. In 2004, he moved to the Japan Football League club Otsuka Pharmaceutical (later Tokushima Vortis). Although he did not play at all, the club won the championship in 2004 and was promoted to the J2 League in 2005. He played many matches from 2005 and became a regular player as a left side midfielder in 2007. However he did not play as much summer 2007 and played less in 2008. In 2009, he moved to his local club, the Banditonce Kakogawa in the Regional Leagues. He played often over three seasons and retired at the end of the 2011 season.
Club statistics Club performance League Cup League Cup Total Season Club League Apps Goals Apps Goals Apps Goals Apps GoalsJapan League Emperor's Cup J.League Cup Total2001JEF United IchiharaJ1 League000000002002001000102003000010102004Otsuka PharmaceuticalFootball League0000-002005Tokushima VortisJ2 League15213-165200614010-150200733310-34320082000-202009Banditonce KakogawaRegional Leagues121--1212010100--1002011120--120Total98643101039
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