Muhammad Ali (born Cassius Marcellus Clay Jr.; January 17, 1942) is a retired American boxer and three-time World Heavyweight Champion, who is widely considered one of the greatest heavyweight championship boxers of all time. As an amateur, he won a gold medal in the light heavyweight division at the 1960 Summer Olympics in Rome. After turning professional, he went on to become the first boxer to win the lineal heavyweight championship three times.
