Muhammad Ali is a man.
Muhammad Ali . At age 18 , he won a gold medal in the light heavyweight division at the 1960 Summer Olympics in Rome and turned professional later that year . 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 . Nicknamed `` The Greatest '' , he was involved in several historic boxing matches .