Muhammad Ali is a man.
Muhammad Ali . At age 22 in 1964 , he won the WBA , WBC , and lineal heavyweight titles from Sonny Liston in a big upset . He is the only boxer to be named The Ring magazine Fighter of the Year six times . 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 .