 On June 4, 1988, he won against former two-time champion Rafael Limón by scoring a seventh-round TKO.Later that year, he unified the WBA and WBC belts by a technical decision win over champion José Luis Ramírez.An accidental head-butt opened a cut on Ramírez's forehead and the doctor halted the fight, sending the decision to the judges' scorecards at that point in the fight.