Almost a year ago to the day, boxing legend Floyd Mayweather Jr (50-0, 27 KOs) took on UFC lightweight champion Conor McGregor in one of the richest fights in history. Mayweather carved out another ridiculously large payday, while McGregor earned more money in his 10th-round TKO loss to Floyd than his entire MMA career put together.
Mayweather is retired (for the umpteenth time), whereas McGregor is heading back into the Octagon for a monumental showdown with current champion Khabib Nurmagomedov at UFC 229. With the fight fast approaching, Mayweather is offering McGregor an invite to train at his gym.