He was a world welterweight champion and held the middleweight title five times. By many experts he is considered the best fighter in history. He earned the nickname Sugar Ray when a newspaper reporter described him as 'sweet as sugar'. In 1951 Robinson, whose real name was Walker Smith, challenged LaMotta for the middleweight title in a fight that is remembered as the St. Valentine Day Massacre. In 1951 he was also upset by British champion Randy Turpin. In the rematch two months later, Robinson knocked Turpin out in the 10th round.