Oleksandr Usyk – Wikipedia

Usyk is the most recent male boxer to simultaneously hold the WBA, WBC, IBF and WBO titles since Terence Crawford in 2017, and only the fifth boxer in history to do so after Crawford, Jermain Taylor, Bernard Hopkins, and Cecilia Brækhus. He is the first Ukrainian undisputed champion.

https://en.wikipedia.org/wiki/Oleksandr_Usyk