Date of Birth: 
Place of Birth: Kawasaki, Kanagawa Prefecture, Japan
About Seiji Oko
- Seiji Oko (?? ?? Oko Seiji , born 15 February 1948) is a former volleyball player from Japan, who was a member of the Japan Men's National Team that won the gold medal at the 1972 Summer Olympics and the silver medal at the 1968 Summer Olympics.In 2004, he became an inductee of the Volleyball Hall of Fame in Holyoke, Massachusetts.
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