All-time greats Sugar Ray Leonard and Roberto Duran fought three times in the 1980s. Their first fight was on June 20, 1980 at Olympic Stadium in Montreal, Canada. Leonard, the Golden Child, was WBC welterweight champion and undefeated at 27-0. WBC/WBA lightweight champion Duran, the Dark Prince, was 71-1 and vacated his titles to move up in weight to challenge Sugar Ray. The difference between the two men, in and out of the ring, couldn't have been more stark, and the result shocked the world. Then they rematched five months later at the Superdome in New Orleans…