Puerto Rican Boxing Olympian Negron Added To “Undefeated Champions”
Former Olympian Carlos Negron will fight on September 12th “Undefeated Champions†pay per view card, presented by PR Best Boxing Promotions, at the Coliseo de Puerto Rico Jose Miguel Agrelot. World champions Ivan “Iron Boy†Calderon and Roman “Rocky†Martinez will defend their titles in the headlining bouts on the card.
