The betting lines may fluctuate as Aug. 26 approaches, but there is no doubt that Conor McGregor will be a massive underdog against Floyd Mayweather.
McGregor, the only man to hold two belts simultaneously in the UFC, owns a 21-3 professional record in mixed martial arts. His tenure in the Octagon has included impressive victories over the likes of Eddie Alvarez, Nate Diaz, Jose Aldo, Chad Mendes, Dustin Poirier and Max Holloway, to name a few. However, the 28-year-old Irishman has no professional boxing bouts to his credit, and he will be entering the ring against one of the greatest talents the Sweet Science has ever seen.