Tyson Fury vs. Oleksandr Usyk fight: Five biggest storylines to watch in the undisputed heavyweight battle

Two of the best fighters on the planet are set to collide on Saturday night in Saudi Arabia

For the first time since 1999, the undisputed heavyweight championship will be at stake in the sport of boxing on Saturday in a historic, four-belt unification between unbeaten champions Tyson Fury and Oleksandr Usyk. 

The pair of future Hall-of-Fame heavyweights will square off in the main event of a pay-per-view card from Kingdom Arena in Riyadh, Saudi Arabia. The fight is the first of two expected meetings this calendar year between Fury (34-0-1, 24 KOs), the lineal and WBC champion, and Usyk (21-0, 14 KOs), who holds the WBO, WBA and IBF titles. 

As we draw closer to big event this weekend, let's take a closer look at the biggest storylines.