Credited with popularizing boxing in North Dakota, he was a four-time champion who won Linea, WBA, and IBF light-heavyweight titles.
He won a silver medal in the 1984 Summer Olympics at age 20.
He was inducted into the International Boxing Hall of Fame on November 12, 2012.
He married Carla Hill in 1989.
He lost to Roy Jones Jr. via knockout on April 25, 1998.