September 12, 1958
On November 22, 1973, in San Juan, Puerto Rico, he knocked out Hiram Santiago in one round
won the world title
On March 6, 1976, in San Juan, Puerto Rico, he defeated Antonio Cervantes by majority decision and became WBA super lightweight champion. On January 14, 1979, in San Juan, Puerto Rico, he defeated Carlos Palomino by majority decision and became the WBC welterweight champion. On May 23, 1981, in Las Vegas, he won the WBC super welterweight title, defeating Maurice Hope by knockout in 12 rounds.
Lost His Title
He only defended it twice, but he did not lose it. The WBC welterweight lost it in his second defense on November 30, 1979, in Las Vegas, Ray"Sugar"Leonard defeated him by technical knockout in 15 rounds. The WBC super welterweight title was lost in his third defense on December 3, 1982, in New Orleans, Thomas Hearns won a majority decision.
On September 18, 1990, in Canada, Scott Papasodora defeated him by unanimous decision.