Iguchi was a first round pick by the Fukuoka Daiei Hawks in the 1997 draft (which was in the fall of 1996) out of Aoyamagakuin University of the Tohto University League. He spent his eight years with the Hawks before departing for the US in 2005. After four years in the US, he returned to Japan in 2009 and signed with the Marines.
|2011 BBM Tohto 80th Anniversary #76|
|1999 Calbee #131|
|2010 Calbee #081|
|2002 BBM Japan National Team #33|