...Flyers Skate Zone training facility on August 26, 2009 in Voorhees, New Jersey. An image of Joe Frazier is painted on the right side of the mask. UNIONDALE, NY - SEPTEMBER 23: Martin Biron #43...

Zoom Gallery: Top 50 Boxers of All-Time

High res photos of 30-21 of the 50 greatest boxers.

Boxing legend Joe Frazier

Joe Frazier of Philadelphia sends his opponent, Russia's Yemel Yanov, down for a count of eight in...

18th June 1973: The world heavyweight boxing champion Joe Frazier, before his fight with Joe Bugner

...Spray flies from the head of challenger Joe Frazier as heavyweight champion Muhammad Ali connects with a right in the ninth round of their title...

World heavyweight champion Joe Frazier, left, is knocked down in the second round of title fight against George Foreman at Kingston...

Muhammad Ali crouches on the canvas as Joe Frazier circles warily in the background after Ali slipped during the 11th round of their title fight...

Muhammad Ali takes a left from Joe Frazier during the 15th round of their heavyweight title bout in New York Monday, March 8, 1971...

Muhammad Ali takes a left from Joe Frazier during the 15th round of their heavyweight title bout in New York Monday, March 8, 1971...

Spray flies from the head of challenger Joe Frazier, left, as heavyweight champion Muhammad Ali connects with a right in the ninth round of their...

The world heavyweight boxing champion Joe Frazier, before his fight with Joe Bugner. (Photo by Evening Standard/Getty Images

Joe Frazier goes down for the third knockdown in the first round title bout against George Foreman who...

Defending WBA champion Joe Frazier, left, hits the canvas in the first round of the world heavyweight title bout, while challenger...

Joe Frazier stands over Muhammad Ali in the 15th round of their heavyweight title fight at New York...