Getty Umar Nurmagomdov UFC bantamweight contender Umar Nurmagomedov returns to the Octagon when he takes on rising star David Martinez at UFC Abu Dhabi. The UFC made the booking official on Monday morning and confirmed the main event between light heavyweights Magomed Ankalaev and Khalil Rountree Jr . UFC Abu Dhabi takes place on July 25 at Etihad Arena in Abu Dhabi, United Arab Emirates. UFC @ufc · Follow HEADLINERS ARE SET 👊 @AnkalaevM vs Khalil Rountree Jr @UNmgdv vs David Martinez #