A native of Tokyo, Japan, Iguchi has a career .276 (422-for-1531) batting average with 76 doubles, 10 triples, 42 home runs, 181 RBI, 238 runs scored and 40 stolen bases in 408 Major League games with the White Sox (2005-07) and Phillies (2007). In 2005, he finished fourth in American League Rookie of the Year voting after hitting .278 (142-for-511) with 25 doubles, six triples, 15 home runs and 71 RBI in his first Major League season. Additionally, he led all American League second baseman with 18 home runs and 96 runs scored in 2006.
Iguchi has appeared in 15 postseason games, including 12 with the 2005 World Series Champion White Sox. He was the first Japanese-born position player to play for a World Series Champion. Iguchi also played in three Division Series games with the Phillies in 2007.
Signed by the White Sox as a free agent on January 27, 2005, Iguchi previously played eight seasons for the Fukuoka Daiei Hawks of the Japanese Pacific League from 1997-2004. He was a four-time Japanese Pacific League All-Star (2001-04) and won three Gold Gloves as a second baseman (2001, 2003-04). In 894 career games with Fukuoka, Iguchi batted .271 (860-for-3175) with 159 doubles, 15 triples, 149 home runs, 507 RBI, 524 runs scored and 159 stolen bases.