After graduating from Chuo University, he joined Hitachi (later Kashiwa Reysol) in 1967.

In 1972, the club won the champions at Japan Soccer League and Emperor's Cup.

In October 1964, he Yamaguchi selected Japan national team for 1964 Summer Olympics in Tokyo.

[1] After retirement, Yamaguchi became a manager for Japan U-23 football team for 1992 Summer Olympics.

This biographical article related to a Japanese association football defender born in the 1940s is a stub.