Regardless of what happens in his rematch with IBF heavyweight champion Daniel Dubois on Saturday, WBA, WBC and WBO champion Oleksandr Usyk already has a Hall of Fame resume. Beating Dubois would make Usyk -- a former undisputed cruiserweight champion -- undisputed heavyweight champion for the second time in his career.

Oleksandr Usyk and Daniel Dubois ' undisputed heavyweight title fight has got Joseph Parker channelling his inner Johnny Cash after the star revealed his call-out to the winner. The Ukrainian will bid to regather the IBF title he surrendered last year against the Briton at Wembley Stadium on Saturday, with all the action live on DAZN Pay-Per-View.