MANNHEIM, GERMANY - MAY 04: Referee Ernest Sharif steps in after Wladimir Klitschko of Ukraine knocked Francesco Pianeta down during their IBF, IBO, WBA, WBO World Championship fight at SAP Arena on ... more 
MANNHEIM, GERMANY - MAY 04: Referee Ernest Sharif steps in after Wladimir Klitschko of Ukraine knocked Francesco Pianeta down during their IBF, IBO, WBA, WBO World Championship fight at SAP Arena on May 4, 2013 in Mannheim, Germany. (Photo by Dennis Grombkowski/Bongarts/Getty Images) less 
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Getty Images | Photo By Dennis Grombkowski / Bongarts/Getty Images
Sat, May 4, 2013 5:34 PM EDT