Yamaguchi was born in Kumamoto Prefecture on November 19, 1971.
After dropped out from Kindai University, he joined Gamba Osaka in 1993.
The club won the 2nd place at 1999 Emperor's Cup.
On July 8, 1994, Yamaguchi debuted for Japan national team against Ghana.
This biographical article related to a Japanese association football midfielder born in the 1970s is a stub.