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 outside of it: religious freedom, racial justice and the triumph of principle over expedience. He is one of the most recognized sports figures of the past 100 years, crowned "Sportsman of the Century" by Sports Illustrated and "Sports Personality of the Century" by the BBC. Born Cassius Clay, he began training at 12 years old and at the age of 22 won the world heavyweight championship in 1964 from ...more on Wikipediasee 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 post-Jack Dempsey era by establishing a reputation as an honest, hardworking fighter at a time when the sport was dominated by gambling interests. Louis' championship reign lasted 140 consecutive months, during which he participated in 26 championship fights; a 27th fight, against Ezzard Charles, was a challenge to Charles' heavyweight title and so is not included in Louis' reign. Louis was ...more on Wikipediasee 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 bouts by knockout, 12 of them in the first round. He won the WBC title in 1986 after defeating Trevor Berbick by a TKO in the second round. In 1987, Tyson added the WBA and IBF titles after defeating James Smith and Tony Tucker. He was the first heavyweight boxer to simultaneously hold the WBA, WBC and IBF titles, and the only heavyweight to successively unify them. In 1988, Tyson became the ...more on Wikipediasee 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 Walcott, Roland La Starza, Ezzard Charles, Don Cockell, and Archie Moore. He has been ranked by many boxing historians as one of the best heavyweight boxers of all time. ...more on Wikipediasee more on Rocky Marciano