After winning five national amateur championships in Puerto Rico, Trinidad debuted as a professional when he was seventeen, and won his first world championship by defeating Maurice Blocker to win the IBF welterweight title in 1993.
After winning five national amateur championships in Puerto Rico, Trinidad debuted as a professional in 1990, when he was seventeen. He would go on to become a three-weight world champion, first by defeating Maurice Blocker to win the IBF welterweight title in 1993.