Oleksandr Usyk

Oleksandr Oleksandrovych Usyk (/??sik/; OO-seek; Ukrainian: ?????????? ?????????????? ?????; born 17 January 1987) is a Ukrainian professional boxer. He reigned as the undisputed cruiserweight champion from 2018 until he vacated his titles in 2019, being the first cruiserweight in history to hold all four major world championships—the WBA (Super), WBC, IBF and WBO titles.

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