Jon Jones vs Daniel Cormier

Jon Jones and Daniel Cormier fought twice in the UFC, with their first meeting taking place at UFC 182 in 2015 and the rematch at UFC 214 in 2017. Jones won the first fight by unanimous decision. He initially won the rematch by knockout, though the result was later overturned.

The result of their UFC 214 rematch was changed to a No Contest after Jon Jones tested positive for a banned performance-enhancing substance. Because the anabolic steroid Turinabol was found in his system, the California State Athletic Commission overturned his victory. This stripped Jones of the title and returned it to Cormier.

The majority of their legendary rivalry took place in the UFC Light Heavyweight division (205 lbs), where Jon Jones was the reigning champion. However, Daniel Cormier later moved up to the Heavyweight division to become a champ-champ. Their intense personal animosity was largely forged during their reign at 205 pounds.

During a promotional press conference in 2014, the two fighters engaged in a physical brawl on stage after Cormier shoved Jones by the throat. Jones responded by throwing punches and tackling Cormier off the stage riser. This highly publicized incident cemented the rivalry as one of the most personal and heated in mixed martial arts history.