This American boxer was, at the end of the seventies, the only man to tame the monster of the heavyweight category: Cassius Clay alias Mohammed Ali.Georges Frazier started his career with an Olympic title at the Tokyo game in '64. After flooring Mohammed Ali the former apprentice butcher made a fortune from 27 victories in 32 fights. But he subsequently lost to Ali and then Foreman and ended his career after a series of failures.