Mark Melligen takes a punch from Gabriel Martinez

Mark Melligen takes a punch from Gabriel Martinez

Vitali Klitschko lands a punch on Shannon Briggs of the U.S. during their WBC heavyweight championship bout in Hamburg

WBC boxing champion Vitali Klitschko lands a punch on Shannon Briggs of the U.S. during their WBC heavyweight championship bout in Hamburg 

Hayden Panettiere, girlfriend of Wladimir Klitschko, attends the WBC Heavyweight Championship boxing

Hayden Panettiere, girlfriend of Wladimir Klitschko, attends the WBC
 Heavyweight Championship boxing bout between Vitali Klitschko and Shannon Briggs in Hamburg

Hayden Panettiere, girlfriend of Wladimir Klitschko

Natali Klitschko, wife of WBC boxing champion Vitali Klitschko, poses with Hayden Panettiere, girlfriend of Wladimir Klitschko, as they await the beginning of the WBC Heavyweight Championship boxing bout between Vitali Klitschko and Shannon Briggs

Kim Ju-hee fights against Jujeath Nagawa

Jujeath Nagawa, left, from the Philippines sends her right to South Korea's Kim Ju-hee in the seventh round

South Korea's Kim Ju-hee, left, fights against Jujeath Nagawa of the Philippines 

 Kim Ju-hee wearing her titles' belts celebrates after defeating
 Jujeath Nagawa of the Philippines in their women's light flyweight
 

Hayden Panettiere, girlfriend of Wladimir Klitschko cheers

 Hayden Panettiere, girlfriend of Wladimir Klitschko cheers before her boyfriend's heavyweight title fight against Samuel Peter

Wladimir Klitschko knocks out challenger Samuel Peter

 Wladimir Klitschko knocks out challenger Samuel Peter in the tenth round of their title fight in Frankfurt

Brazilian boxer David Lourenco celebrates after winning his welterweight 69 kg boxing final bout against Ahmad Mamadjanov

Brazilian boxer David Lourenco  celebrates after winning his welterweight 69 kg boxing final bout against Ahmad Mamadjanov of Uzbekistan at the Singapore 2010 Youth Olympic Games (YOG)

Dmitry Pirog is sent to his corner by referee Robert Byrd after knocking out Daniel Jacobs

Dmitry Pirog is sent to his corner by referee Robert Byrd after knocking out Daniel Jacobs 

Joel Casamayor takes a punch from Robert Guerrero

Joel Casamayor takes a punch from Robert Guerrero

All Star Wrestling at Birkenhead on Merseyside

All Star Wrestling at Birkenhead on Merseyside                                   

Photograph: Sean Smith/The Guardian

Brian Magee of Northern Ireland lands a punch on Mads Larsen (R) of Denmark

Brian Magee of Northern Ireland lands a punch on Mads Larsen (R) of Denmark

Mao Yi Jun (L) of China is punched by Mohamad Nor Rizan of Singapore

Mao Yi Jun (L) of China is punched by Mohamad Nor Rizan of Singapore during their super bantamweight bout in Singapore January 16, 2010. 
Credit: REUTERS/Tim Chong

Thailand's Poonsawat Kratingdaenggym (R) punches Japan's Satoshi Hosono

Thailand's Poonsawat Kratingdaenggym (R) punches Japan's Satoshi Hosono during their World Boxing Association (WBA) super bantamweight title bout in Tokyo January 11, 2010. 
Credit: REUTERS/Toru Hanai

Finalist, Sports Action, The Press Photographer's Year 2008 Michael Gbenga (L) of Ghana

Finalist, Sports Action, The Press Photographer's Year 2008 Michael Gbenga (L) of Ghana punches Britain's Dean Francis (R) during their Commonwealth light heavyweight title boxing match in Bolton, northern England, December 8, 2007. 
Credit: REUTERS/Phil Noble

Pictures of the Year 2009: Ricky Hatton of Britain goes down in a TKO in the second round

Ricky Hatton of Britain goes down in a TKO in the second round during his fight with Manny Pacquiao of the Phillippines in a 12 round Super Lightweight World Championship bout at the MGM Grand Garden Arena in Las Vegas, Nevada, May 2, 2009. At right is Pacquiao's trainer Buboy Fernandez.
Credit: REUTERS/Steve Marcus

Nicaragua's Roman Gonzalez lands a right on Katsunari Takayama

Nicaragua's Roman Gonzalez lands a right on Katsunari Takayama of Japan en route to victory in their WBA minimumweight bout in Kobe, Japan
Dailymail.co.uk

Fist of fury

Ruslan Chagaev, right, of Uzbekistan receives a punch from heavyweight boxing title holder Vladimir Klitschko of Ukraine during their IBF/WBO and IBO world heavyweight championship title fight in Gelsenkirchen, Germany on Saturday.
msnbc.com