Nicknamed "The Beast", he was a WBC Light Middleweight Champion from July 1989–March 1990, and a silver medalist at the 1980 Olympics.
His first professional fight was a first round knockout of Oemer Karadenis on December 5, 1980.
He was part of the Junior Middleweight and Middleweight divisions in the early 1980's, which boxing fans consider a golden era of the sport.
He has a daughter named Mildred Prudence Mugabi.
He and Sugar Ray Leonard are two of the most revered fighters of the early 80's.