Nishizawa was born in Shizuoka on June 18, 1976. After graduating from Shimizu Higashi High School, he joined J1 League club Cerezo Osaka in 1995. He moved to Spanish club Espanyol in December 2000. In July 2001, he moved to English club Bolton Wanderers. During his brief spell playing Bolton Wanderers, he is best remembered for scoring a dramatic late equaliser against Walsall in the League Cup. In 2002, he returned to Cerezo Osaka was relegated to J2 League from 2002. The club won the 2nd place in 2002 and was promoted to J1 League. In 2006, the club was relegated to J2 League. He moved to his local club Shimizu S-Pulse in 2007. He returned to Cerezo Osaka in 2009 and he retired end of 2009 season.