UFC 217: Bisping vs. St-Pierre

Three championship belts changed hands in three consecutive fights, making it one of the most memorable events in UFC history. The card was headlined by Georges St-Pierre returning after a four-year hiatus to challenge Michael Bisping for the Middleweight Championship. Moving up a weight class, St-Pierre became a two-division champion, and the victory ultimately stood as the final win of his career, retiring on top.