Spinks is a Two-division world champion, having held the undisputed light heavyweight title from 1983 to 1985, and the lineal heavyweight title from 1985 to 1988. He was inducted into the International Boxing Hall of Fame in 1994. As an amateur he won a gold medal in the middleweight division at the 1976 Summer Olympics. Spinks is the brother of former world Heavyweight champion Leon Spinks, and uncle of Cory Spinks, a former welterweight and light middleweight champion. Spinks went undefeated in his first 31 professional fights, beating such opponents as Dwight Muhammad Qawi, Eddie Mustafa Muhammad, Marvin Johnson and Eddie Davis en route to becoming the undisputed light heavyweight champion. Following ten successful title defenses, Spinks moved up to heavyweight, and as an underdog defeated long-reigning IBF heavyweight champion Larry Holmes; in doing so, Spinks became the first reigning light heavyweight world champion to win the heavyweight title. Spinks only defeat in his professional career came to the hands of Mike Tyson on June 27, 1988. The International Boxing Research Organization and BoxRec rank Spinks among the ten greatest light heavyweights of all time.