At the WBA's KO Drugs event in Argentina, María ‘La Chiqui’ Rivera got a career-best win at 44 years of age. Rivera (14-6-3) won the WBA interim flyweight belt against Mexico's Jacky Calvo (21-9-2)... Italian heavyweight Giovanni Scuderi (11-0) won by knockout in the eighth round against the local Jairo Suarez (7-3)... In a battle between two Argentine middleweights Sebastian Papeschi of Argentina (22-4) overcame Diego Ramirez (25-12-1) by knockout in the fifth round... American heavyweight DeAndre Savage (6-0) scored a third-round knockout over Argentina’s Esteban (6-7-1)... Colombia's  Jaime Villegas (17-1) saw his unbeaten record come to an end against Buenos Aires' Daniel Combi (12-9), with Combi claiming the light heavyweight bout by majority decision..  Local bantamweight Lucrecia Arrieta (7-7) won a hard fought performance against Veronica Zuluaga of Colombia (6-2-1) via split decision.