Most bouts undefeated by a world champion boxer in a career (male)
- Who
- Wanheng Menayothin
- What
- 54 total number
- Where
- Not Applicable
- When
- 25 October 2019
The most bouts undefeated by a world champion boxer in a career is 54, achieved by Wanheng Menayothin (aka Chayaphon Moonsri, Thailand) at his latest defence of the WBC Minimumweight title on 25 October 2019 in Chonburi, Thailand.
Wanheng Menayothin fought his first professional bout on 26 January 2007. He has held the WBC Minimumweight title since November 2014.