Joseph Louis Barrow (May 13, 1914 – April 12, 1981), better known as Joe Louis and Brown Bomber, was an American professional boxer and the World Heavyweight Champion from 1937 to 1949. He is considered to be one of the greatest heavyweights of all time.
Muhammad Ali (born Cassius Marcellus Clay, Jr., January 17, 1942) is an American former professional boxer, generally considered among the greatest heavyweights in the sport's history. Ali was diagnosed with Parkinson's in 1984.
William Harrison "Jack" Dempsey ("The Manassa Mauler") (June 24, 1895 – May 31, 1983) was an American professional boxer and cultural icon of the 1920s. He held the World Heavyweight Championship from 1919 to 1926. wem