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Oleksandr Usyk was born on 17 January 1987 in Simferopol, Ukrainian SSR, Soviet Union. He is a professional boxer who competes in the heavyweight division. Usyk is a former undisputed cruiserweight champion and the current WBA (Super), IBF, WBO, and IBO heavyweight champion. He is considered one of the greatest boxers of all time, and is widely regarded as the best cruiserweight in history.