Colby Covington and Jorge Masvidal
Covington and Masvidal are two of the most controversial MMA fighters today. Once upon a time, the pair had a close friendship when they trained together at Florida’s American Top Team. But it all came crashing down when Covington allegedly failed to pay one of his coaches. He left the gym under a cloud and the duo became bitter enemies.

It made sense for the UFC to turn their rivalry into a fight. Finally, they faced each other in 2022 but Covington won a dominant decision. This didn’t heal their wounds because Masvidal punched his foe on the street. Next, there was a court case that didn’t do anything to rehabilitate their relationship (via MMA News).