Joshua vs Usyk is Saturday. Fascinating fight on many levels.

Rare heavyweight matchup between two Olympic gold medalists. The first since Lennox Lewis vs Ray Mercer in the mid-1990s.

Usyk is the first southpaw AJ will face professionally.

Size difference. Holyfield proved cruiserweights can transition into successful heavyweights and Usyk is the second-greatest cruiserweight since Evander himself. Still, the height and weight differences are considerable.

Joshua still has a lot to prove, as this will be just his third fight since getting kayoed by Ruiz.

Should be fun!