Claim: An ESPN biography program rated Muhammad Ali as the third greatest athlete of the 20th century.
Evidence: He was ranked as the greatest athlete of the 20th century by Sports Illustrated , the Sports Personality of the Century by the BBC , and the third greatest athlete of the 20th century by ESPN SportsCentury.
SportsCentury is an ESPN biography program that reviews the people and athletic events that defined sports in North America throughout the 20th and 21st centuries.