Nakazawa started playing football for his home country. He played for Yoshikawa Higashi Junior High School and Misato Technology High School, but attracted no scouts' eyes. Determined to be a pro, he left for Brazil to improve his football skills and trained with América Mineiro. During his time there, he won the Campeonato Mineiro in the junior category and played a key role in coach Ricardo Drubscky's squad.
Tokyo Verdy
After a year, he returned to Japan and joined Verdy Kawasaki (later Tokyo Verdy) in 1998 as a trainee, which meant he received no compensation. He impressed the club enough to win a full professional contract the following year.
His first J1 League appearance came on 13 March 1999 against Cerezo Osaka at Todoroki Athletics Stadium. He scored his first league goal on 10 April 1999 against Nagoya Grampus Eight also at Todoroki. That year, he received the J.League Young Player of the Year award and was selected for the J.League Team of the Year.
Yokohama F. Marinos
Nakazawa was transferred to Yokohama F. Marinos in 2002 and contributed to the club winning two consecutive J1 League championships in 2003 and 2004.[3] He was selected as the Most Valuable Player of the league in 2004.[4] He played more than 30 games every season from 2007 except 2010 season.[2] He also played full time for 178 consecutive games from July 2013 to August 2018. This is a J.League record except goalkeeper.[5][6] However he could not play at all in the match from August 2018 except last match in 2018 season.[7]
On 8 January 2019, Yokohama F. Marinos announced his retirement at 2018 season.[8] He was 40 years old.
International career
Philippe Troussier called him up for Japan national team. Nakazawa played in Olympic qualifiers as well as the finals in Sydney. Troussier promoted him to a full international. His first international appearance came on 8 September 1999 in a friendly against Iran at the International Stadium Yokohama.[9] He scored his first goal on 13 February 2000 in an Asian Cup qualifier against Singapore in Macau.[9]
Under new national manager Zico, he partnered with Tsuneyasu Miyamoto at the back line. He participated in the 2004 AFC Asian Cup finals.[9] He played in all the Japan matches and scored three goals, one of which was a stoppage time equaliser in the semi-final against Bahrain, and Japan went on to win the title again.
He also played in the 2006 FIFA World Cup in Germany but the team failed to proceed to the knockout stage. After the tournament, he announced his retirement from the international football at the age of 28.[10] However, six months later, he withdrew his decision and Ivica Osim played him in a friendly against Peru on 24 March 2007.[11]
He played in the 2007 AFC Asian Cup finals but this time the team failed to defend the title and finished 4th in the tournament.
On 30 May 2010, Nakazawa scored an own-goal in a friendly match against England to give England the lead; his defensive partner Marcus Tulio Tanaka had already scored an own goal to draw England level with Japan. The match ended 2–1 to England.
In the 2010 FIFA World Cup, Nakazawa played all four of Japan's games on their way to the round of 16 and knockout by penalties to Paraguay.
Career statistics
Club
Appearances and goals by club, season and competition[12]