 In February 2008, Mijares returned to the United States and was featured on a HBO pay-per-view under card against Flyweight Olympian Jose Navarro, the early rounds belonged to Mijares, while the middle rounds were evenly matched with Mijares finishing strong in the later rounds.Mijares retained his title with a Split Decision victory.Mijares unified his WBC Super Flyweight title by defeating WBA Champion Alexander Muñoz via split decision on May 17, 2008.