17. Leon and Michael Spinks
Accomplishments: Leon: Beat Muhammad Ali for heavyweight championship; Michael: International Boxing Hall of Fame inductee
The Spinks brothers both reached the pinnacle of the boxing ladder, with each winning the heavyweight title at different periods of their careers (Leon in 1978, Michael in 1983). Despite Leon's gold medal and defeat of Muhammad Ali and Michael's Hall of Fame induction, both are more famous for their unceremonious losses rather than their strong track records of success. Both Leon (Ali rematch) and Michael (a young Mike Tyson) suffered defeats at the hands of a couple of the sport's biggest legends, forever associating their family name with the type of humbling defeat usually reserved for lesser fighters.