'Uncle Creepy' McCall Meets John Moraga in UFC on Fox 4 Flyweight Showdown

Promotion officials announced the news on Thursday afternoon. UFC on Fox 4 takes place at the Staples Center in Los Angeles and is headlined by a light heavyweight confrontation between Mauricio Rua and Brandon Vera. The event, which marks the Las Vegas-based promotion's third effort on Fox's flagship network this year, also features a 205-pound contest between Lyoto Machida and Ryan Bader, as well as a heavyweight showdown pitting Ben Rothwell against Travis Browne.

McCall joined the UFC this spring as the reigning Tachi Palace Fights flyweight champion, fighting former UFC bantamweight title contender Demetrious Johnson to a draw at UFC on FX 2 in the semifinals of the promotion's four-man flyweight title tournament. As the contest was incorrectly announced as a majority decision win for Johnson, no sudden victory round was contested, and the two were booked for a June 8 rematch at UFC on FX 3. No controversy would arise in that bout, as Johnson took a unanimous verdict to earn a shot at the newly-created UFC flyweight championship against fellow finalist Joseph Benavidez.

Moraga's UFC debut will serve as his 12th pro outing. The Arizona Combat Sports representative has tasted defeat just once in his two-year career, falling by decision to “Ultimate Fighter 14” winner John Dodson in 2010. Since that setback, Moraga has won four straight fights, most recently earning a June 22 victory over Maurice Senters to capture the vacant Rage in the Cage bantamweight title.