Oleksandr Usyk knocked out Daniel Dubois to reign as the undisputed heavyweight boxing champion. Round-by-round analysis.

Unified heavyweight champion Oleksandr Usyk hasn't just fought (and defeated) the very best of his era, when it comes to former champions Anthony Joshua and Tyson Fury, he has done so twice.  So, it's only natural that when Usyk (23-0,

Oleksandr Usyk once again became the undisputed heavyweight champion of the world with a fifth-round knockout win over Daniel Dubois at Wembley Stadium in London, England.