Getty Images
Boxing Match Between Sonny Liston and Dave Bailey
Dave Bailey and Sonny Liston meet at boxing match in Sweden / men fight before Swedish audience / Liston puts Bailey on the ground with a punch / referee counts the knockout / Liston is booed for ending the match so quickly / referee...
Getty Images
Curtis 50 Cent' Jackson Hosts boxer Yuriorkis Gamboa Open Media Workout
DEERFIELD BEACH, FL - JUNE 12: Curtis '50 Cent' Jackson and Yuriorkis Gamboa attends Yuriorkis 'The Cyclone of Guantanamo' Gamboa media work out at Iron Mike Productions Gym on June 12, 2014 in Deerfield Beach, Florida.
Getty Images
Curtis 50 Cent' Jackson Hosts boxer Yuriorkis Gamboa Open Media Workout
DEERFIELD BEACH, FL - JUNE 12: Curtis '50 Cent' Jackson and Yuriorkis Gamboa attends Yuriorkis 'The Cyclone of Guantanamo' Gamboa media work out at Iron Mike Productions Gym on June 12, 2014 in Deerfield Beach, Florida.
Getty Images
Masahiko Harada Fights Jose Medel for Bantamweight Title
Masahiko Harada Fights Jose Medel for bantamweight title in Nagoya, Japan / the men fight in ring surrounded by crowd / Harada dominates the fight / crowd stands and cheers as Harada wins.
Getty Images
HD SUPER SLOW MO: Boxer Taking Out His Mouthguard
HD1080p: SUPER SLOW MOTION CLOSE-UP shot of a professional boxer taking out his mouthguard.
Getty Images
Polar bears (Ursus marinus) wrestling, Manitoba, Canada
Polar bears (Ursus marinus) wrestling, Manitoba, Canada
Getty Images
HD SUPER SLOW MO: Boxer Punching Gloves Together
HD1080p: SUPER SLOW MOTION shot of an unrecognizable boxer with abdominal muscles punching boxing gloves together. Chalk spreads against dark background.
Getty Images
HD SUPER SLOW MO: Boxer Training In The Club
HD1080p: SUPER SLOW MOTION shot of a professional boxer punching a punching bag.
Getty Images
Wanna Fight
Young black man boxing with the camera.http://www.lisegagne.com/louis/people.jpg
Getty Images
Andre Berto on World Boxing Council shorting female matches because of periods at the Archlight in Hollywood
Andre Berto on World Boxing Council shorting female matches because of periods at the Archlight in Hollywood - Celebrity Sightings in Los Angeles, CA on 10/22/2014
Getty Images
ATMOSPHERE: signage AT Nicole 'Snooki' Polizzi Introduces Team Snooki Boxing, New York, NY, United States, 01/12/2012
ATMOSPHERE: signage AT Nicole 'Snooki' Polizzi Introduces Team Snooki Boxing, New York, NY, United States, 01/12/2012 (Footage by WireImage Video/Getty Images Entertainment Video)
Getty Images
Boxing Sauerland - Training
Tracking Shot, Light Middleweight Fighter Juergen Braehmer and coach Karsten Roewer Practising. (Footage by: Martin Rose/Getty Images).
Getty Images
Oscar De la Hoya, Paul Malignaggi, participant, Danny Garcia, and Danny Jacobs at the Oscar de la Hoya Leads Boxing Clinic for Teenage Boxers of USA Boxing Metro
Oscar De la Hoya, Paul Malignaggi, participant, Danny Garcia, and Danny Jacobs at the Oscar de la Hoya Leads Boxing Clinic for Teenage Boxers of USA Boxing Metro at New York NY. (Footage by WireImage Video/GettyImages)
Getty Images
ATMOSPHERE: David Haye vs Dereck Chisora: Press Conference on July 11, 2012 in London, England (Footage by WireImage Video/Getty Images)
ATMOSPHERE: David Haye vs Dereck Chisora: Press Conference on July 11, 2012 in London, England (Footage by WireImage Video/Getty Images)
Getty Images
Oscar de la Hoya, Paul Malignaggi, Danny Garcia, Mikey Perez and Danny Jacobs at the Oscar de la Hoya Leads Boxing Clinic for Teenage Boxers of USA Boxing Metro
Oscar de la Hoya, Paul Malignaggi, Danny Garcia, Mikey Perez and Danny Jacobs at the Oscar de la Hoya Leads Boxing Clinic for Teenage Boxers of USA Boxing Metro at New York NY. (Footage by WireImage Video/GettyImages)
Getty Images
Oscar De la Hoya, Paul Malignaggi, participant, Danny Garcia, and Danny Jacobs at the Oscar de la Hoya Leads Boxing Clinic for Teenage Boxers of USA Boxing Metro
Oscar De la Hoya, Paul Malignaggi, participant, Danny Garcia, and Danny Jacobs at the Oscar de la Hoya Leads Boxing Clinic for Teenage Boxers of USA Boxing Metro at New York NY. (Footage by WireImage Video/GettyImages)
Getty Images
ATMOSPHERE - David Haye at David Haye DVD Signing at HMV, Oxford Street on January 7, 2013 in London, England.
ATMOSPHERE - David Haye at David Haye DVD Signing at HMV, Oxford Street on January 7, 2013 in London, England.
Getty Images
Nicole ÒSnookiÓ Polizzi and Andy Polizzi at Nicole 'Snooki' Polizzi Introduces Team Snooki Boxing, New York, NY, United States, 01/12/2012
Nicole ÒSnookiÓ Polizzi and Andy Polizzi at Nicole 'Snooki' Polizzi Introduces Team Snooki Boxing, New York, NY, United States, 01/12/2012 (Footage by WireImage Video/Getty Images Entertainment Video)
Getty Images
The Moscow Circus at Madison Square Gardens
Acrobats come into the ring, jumping on a giant trampoline / a child heavy audience watches acrobat on stilts / performers on horseback / a bear on its hind quarters carries a dog around the edge of the ring / bears dressed as fighters...