Floyd Mayweather Jr. beats Robert Guerrero, remains undefeated

LAS VEGAS, NV - MAY 04: (L-R) Floyd Mayweather Jr. throws a right to the face of Robert Guerrero 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)

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