Usyk defeated Dubois by knockout within the fifth spherical and have become the undisputed world champion (video)

Usyk defeated Dubois by knockout within the fifth spherical and have become the undisputed world champion (video)<p>Oleksandr Usyk grew to become the undisputed world champion in heavyweight, defeating Daniel Dubois. The struggle came about on July 19 at Wembley Stadium in London.</p>