Usyk became the first outright heavyweight champion in 25 years when he defeated Tyson Fury in May, but has now relinquished his IBF belt just over a month later. According to boxing reporter Dan Raphael, Dubois, who won the vacant IBF title thanks to an early victory over Filip Hrgovic in May, is now a full champion.
Dubois is expected to make the first defense of his title against former unified champion Anthony Joshua on September 21 at Wembley Stadium in London.
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Canelo placed half a million dollars on Usyk’s victory