Koji Yamase

Yamase was born in Sapporo on September 22, 1981. After graduating from Hokkai High School, he joined J2 League club Consadole Sapporo in 2000. He played many matches as offensive midfielder from first season under manager Takeshi Okada. Consadole also won the champions in 2000 season and was promoted to J1 League. In 2000, he played as regular player and was selected "Rookie of the Year award". Although he was given number 10 shirt, he could not play at all in the match for injured from summer 2002. Consadole also finished at the bottom place in 2002 season and was relegated to J2. In 2003, Yamase moved to J1 club Urawa Reds. Reds won the champions 2003 J.League Cup. In 2004, Reds won the 2nd place in J1 League and J.League Cup. In 2005, Yamase moved to Yokohama F. Marinos. He was given number 10 shirt and played many matches as offensive midfielder. His brother Yukihiro Yamase also played F. Marinos until 2009. He spent in this club the longest season in his career. In 2011, Yamase moved to Kawasaki Frontale. He played all 34 matches in 2011 season. However his opportunity to play decreased in 2012 season. In 2013, Yamase moved to J2 club Kyoto Sanga FC. He played many matches as regular player until 2016. In 2017, he moved to Avispa Fukuoka and played in 2 seasons. In 2019, he moved to Ehime FC.

In June 2001, Yamase was selected the Japan U-20 national team for 2001 World Youth Championship. At this tournament, he played all 3 matches and scored 2 goals. On August 9, 2006, he debuted for the Japan national team under new manager Ivica Osim against Trinidad and Tobago which is Japan's first match after the 2006 World Cup. He played 13 games and scored 5 goals for Japan until 2010.

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• Koji Yamase at FIFA
• Koji Yamase at J.League (player) (in Japanese)
• Koji Yamase at National Football Teams.com
• Koji Yamase at Soccerway.com
• Koji Yamase at FootballDatabase.eu
• Koji Yamase at WorldFootball.net
• Koji Yamase at Transfermarkt (player)
• Koji Yamase at TheFinalBall.com