This week, the UFC returns to Yas Island, Abu Dhabi. The event at Etihad Arena features a key bantamweight matchup between former interim title challenger Cory Sandhagen and undefeated Umar Nurmagomedov. Elsewhere, many other combat sports events are taking place, featuring several familiar names who have competed under the UFC banner. Check out which veterans of the global MMA leader are competing July 31-Aug. 2