By Miguel Rivera
Auditorio del Bicentenario, Morelia, Michoacán de Ocampo, Mexico - WBC silver featherweight champion Robinson Castellanos (16-9, 10KOs) survived a first round scare to stop Omar Estrella (19-5-2, 13KOs) in the sixth round of a war.
Castellanos was dropped in the first round and had to fight his way out of trouble. The champion came back to drop Estrella in the third with a combination of punches. Both boxer started winging knockout shots as the fight continued. After four rounds, Estrella was up on two of the three official cards. During the sixth, a hard uppercut and a follow-up combination of punches closed the show for Castellanos.