By Gabriel F. Cordero
WBO super flyweight world champion Omar Narvaez (38-1-2, 20 KOs) will make the seventh defense of his crown against unbeaten mandatory challenger Daniel Rosas (15-0-1. 10 KOs) on May 25 at Luna Park in Buenos Aires, Argentina. Narvaez was training in Mendoza, Argentina with former world champion and now trainer Pablo Chacon but has now shifted his camp back to Trelew. The 37-year-old champion previously made 16 defenses of his WBO flyweight belt before moving up to superfly.