Nakazawa was born in Mitaka on 26 October 1982. After graduating from high school, he joined Kashiwa Reysol in 2001. However he could hardly play in the match. He moved to FC Tokyo in June 2006. He moved to Gamba Osaka in 2007. He became a regular player from 2008. In 2008, the club won the champions AFC Champions League and the 3rd place Club World Cup. The club also won 2008 and 2009 Emperor's Cup. In late 2012, he could not play for injury and the club was relegated to J2 League. He moved to Kawasaki Frontale in 2013 and Cerezo Osaka in 2015. However his opportunity to play decreased and he retired end of 2016 season.