Just call him "The Champ"
Muhammad Ali is an American former professional boxer, generally considered among the greatest heavyweights in the sport's history. A controversial and polarizing figure during his early career, Ali is today widely regarded for the skills he displayed in the ring plus the values he exemplified ...moresee more on Muhammad Ali
Joseph Louis Barrow, better known as Joe Louis, 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. Nicknamed the Brown Bomber, Louis helped elevate boxing from a decline in popularity in the ...moresee more on Joe Louis
Michael Gerard "Mike" Tyson is an American retired professional boxer. Tyson is a former undisputed heavyweight champion of the world and holds the record as the youngest boxer to win the WBC, WBA and IBF heavyweight titles at 20 years, 4 months, and 22 days old. Tyson won his first 19 professional ...moresee more on Mike Tyson
Rocky Marciano was an American professional boxer and the World Heavyweight Champion from September 23, 1952, to April 27, 1956. Marciano is the only person to hold the heavyweight title without a bout tie or defeat during his entire career. Marciano defended his title six times, against Jersey Joe ...moresee more on Rocky Marciano