UFC 259 stands as a defining moment for either Israel Adesanya or Jan Blachowicz.
The undefeated Adesanya (20-0), the reigning middleweight champion, moves up a weight class to challenge Blachowicz (27-8), who is the light heavyweight champion. Adesanya will add a whole new layer of stardom to his brilliance by winning a title from a higher weight class, and a victory would further increase the hype for a possible heavyweight about against Jon Jones. But that will be no easy task against the powerful Blachowicz, who has an opportunity to become a far greater star if he becomes the first to defeat Adesanya in the Octagon.