Yuh Jae-doo

In 1971, Yuh won the Orient and Pacific Boxing Federation middleweight title.

In 1975, after his successful 15th defense of the OPBF middleweight title, he moved down in weight to light middleweight and challenged Koichi Wajima for the Lineal and WBA light middleweight titles in Fukuoka, Japan. He eventually became the second South Korean light middleweight world champion by knocking out Wajima in the 7th round. He defended the belt once before losing the belt to Wajima via 14th-round KO in a rematch in 1976. Although he had lost the world light middleweight title, Yuh retained the OPBF middleweight belt until his eventual retirement from the ring in 1978, when he vacated the title. He also holds the OPBF record for most successful title defenses, defending the title 21 times over 7 years.