As manager Tadahito Iguchi (井口 資仁, Iguchi Tadahito, born December 4, 1974), nicknamed "Gucci",[1] is a Japanese served professional baseball second baseman and former manager of the Chiba Lotte Marines of Nippon Professional Baseball (NPB).

As a member of the Chicago White Sox in 2005, Iguchi became the first Japanese-born position player to win the World Series.

Born in Tanashi, Tokyo, Japan as Tadahito (忠仁), Iguchi began playing in high school and after graduating in 1993, went to Aoyama Gakuin University where he distinguished himself by hitting the Tohto University Baseball League record of eight home runs in a season and winning the triple crown.

Earlier that same year, on April 15, he made arguably the best defensive play of his career against the Toronto Blue Jays, falling after charging, and while fielding, a slow infield chopper hit by Bengie Molina.

[12] On October 12, 2017, Iguchi was hired as the manager of the Chiba Lotte Marines, filling the role that was left vacant after Tsutomu Itō stepped down from the position.