LAS VEGAS, NV - MAY 04: (R-L) Floyd Mayweather Jr. and Robert Guerrero exchange blows in their WBC welterweight title bout at the MGM Grand Garden Arena on May 4, 2013 in Las Vegas, Nevada. (Photo ... more 
LAS VEGAS, NV - MAY 04: (R-L) Floyd Mayweather Jr. and Robert Guerrero exchange blows in their WBC welterweight title bout at the MGM Grand Garden Arena on May 4, 2013 in Las Vegas, Nevada. (Photo by Al Bello/Getty Images) less 
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Getty Images | Photo By Al Bello / Getty Images
Sun, May 5, 2013 12:35 AM EDT