Tokio Tasaka (田阪 登紀夫, Tasaka Tokio; born September 4, 1947) is a Japanese former international table tennis player. He won seven World Table Tennis Championships medals; fours silver medals and three bronze medals. His doubles partners were Nobuhiko Hasegawa and Sachiko Yokota. After retiring from table tennis he studied sports science at the Osaka Sports University and became a noted sports scientist.
Source: “Tokio Tasaka”, English Wikipedia (CC BY-SA 4.0), excerpt