Kudo was an amateur wrestler during high school, and only became a professional boxer when he failed to join the Japanese Olympic wrestling team for the
1972 Munich Olympics. He made his professional debut in May, 1973, and won the Japanese
middleweight title in his 6th professional fight. He defended the title 8 times before returning it to Japanese Boxing Commission. In 1978, he moved down to the
light middleweight division to challenge
Eddie Gazo for the
WBA and lineal light middleweight titles. Kudo won by 15 round split-decision, becoming the second Japanese boxer to capture the world light middleweight crown since
Koichi Wajima. Kudo defended his title three times including against Korean contender Ho Joo, before losing to undefeated challenger
Ayub Kalule by unanimous decision for his only professional loss. He announced his retirement after the fight at only 28 years of age. His record was 23-1-0 (12KOs). Kudo was possibly one of the least technically skilled champions in
boxing history. He compensated for his lack of skill by displaying an enormous amount of stamina and strength, and retired without suffering a single knockdown. ==Professional boxing record==