MIAMI GARDENS, Fla. – John Moraga isn’t finding any luck in boxing. Moraga, a former UFC flyweight title challenger, suffered a second-round TKO loss to 21-year-old prospect Marc Castro on Saturday’s Canelo-Yildirim card at Hard Rock Stadium. The result put Moraga at 1-3 as a professional boxer. Moraga, 36, was dropped seven seconds into the bout and then out-boxed for the majority of Rounds 1 and 2. In the second, Moraga had moments landing a few solid shots, but he was dropped twice by Castro, forcing the referee to stop the fight.