US Edition
Four-Division World Champion Kosei Tanaka Retires at 29 Due to Eye Injuries
- Japanese boxer Kosei Tanaka, a four-division world champion, announced his retirement on June 4, 2025, in Nagoya due to eye injuries.
- Tanaka decided to retire after losing his last fight in October 2024 to South Africa's Phumelele Cafu and undergoing surgeries on both eyes.
- He turned professional at 18, became the fastest boxer to win titles in four weight classes within 21 bouts, surpassing Oscar De La Hoya's 24 fights record.
- Tanaka ended his boxing career with a 20-2 record, including 11 knockouts, and reflected that although some objectives remained out of reach, he feels satisfied with his accomplishments.
- His repeated eye injuries and multiple surgeries since 2021 left him unable to spar or compete, leading him to end his 11-year boxing career to avoid risking blindness.
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Kosei Tanaka: A Boxer's Fight Beyond the Ring Ends | Sports-Games
Renowned boxer Kosei Tanaka retires at age 29 due to persistent eye injuries. A record holder for fastest four-weight world champion, Tanaka leaves the sport with a 20-2 record. Over his 11-year career, multiple surgeries have left his vision compromised, forcing him to hang up his gloves.
The Independent
The Independent (US)Four-weight world champion Kosei Tanaka confirms retirement at 29 due to eye injuries
Tanaka made a flying start to his professional career, becoming a world champion within five fights before securing another three titles by his 20th bout
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