Answer
Héctor Camacho began his professional boxing career in 1980, when he won a four-round unanimous decision against Rafael Mendoza. Camacho went on to become a world champion in four different weight classes, winning the WBC junior lightweight title in 1983, the WBC lightweight title in 1985, the WBA junior welterweight title in 1986, and the WBA welterweight title in 1989.