WBA Interim Light Flyweight champion Juan Carlos Reveco (22-1, 12 KOs) retained his belt with a third round KO over Ronald Barrera (26-7-2, 16 KOs) on Friday night at the Estadio La Colonia in Junin, Mendoza, Argentina. Reveco finished Barrera with a left hook to the liver. Barrera is now 0-4 in world title fights.