Date of Birth: 
About Tetsumasa Yamaguchi
- Tetsumasa Yamaguchi (born March 5, 1947) is a Japanese sprint canoer who competed in the late 1960s and early 1970s.
- Competing in two Summer Olympics, he was eliminated in the semifinals in each of three events he competed (1968: C-1 1000 m, C-2 1000 m; 1972: C-1 1000 m).
Read more at Wikipedia