Muhammad Ali, Floyd Mayweather Jr., Mike Tyson and Naseem Hamed are some of the most famous boxing professionals to ever grace the ring. Ali, arguably the most famous boxer of all time, was not only a champion boxer but also a political activist and motivational speaker. Ali became the heavyweight champion in 1964 after beating Sonny Liston and coining the still-popular phrase "float like a butterfly, sting like a bee."
Floyd Mayweather Jr. is one of the highest paid boxing champions, commanding no less than $100 million per fight, and holding the record for the most pay-per-view buys. Mike Tyson became the youngest heavyweight boxer in the history of the sport by winning the title at the age of 20. Known for readily delivering a knock-out blow, Tyson's popularity has remained consistent since his retirement. Naseem Hamed, a featherweight fighter, is a southpaw and won 36 of his 37 matches.
Roy Jones Jr. is another famous boxer who was named "Fighter of the Decade" during the 1990s. Beginning at middleweight, Jones moved up to heavyweight and eventually won the title in that weight class, a feat that had not been accomplished for over 100 years prior. Other notable boxers include Rocky Marciano, Sugar Ray Robinson, Julio Cesar Chavez, Marvin Hagler and Willie Pep.