Boxing was first introduced as an Olympic event at the 1904 Summer Olympics. Since then, the Games have introduced us to future boxing legends. In 1960, boxer Muhammad Ali won a spot on the U.S. Olympic Boxing Team, returning home that year with a gold medal. At the 1976 Olympics, Sugar Ray Leonard won the gold medal in light-waterweight boxing, with the heavyweight title awarded to Leon Spinks. These men join the group of fighters, from George Foreman to Floyd Mayweather, who have made history in their run for Olympic Gold. Biography looks at some of the hardest hitters in Olympic boxing history.