Floyd Mayweather Jr. beats Robert Guerrero, remains undefeated

��LAS VEGAS, NV - MAY 04: Rapper Lil Wayne sings as he walks with Floyd Mayweather Jr. to take on Robert Guerrero in their WBC welterweight title bout at the MGM Grand Garden Arena on May 4, 2013 in Las Vegas, Nevada. (Photo by Jed Jacobsohn/Golden Boy/Golden Boy via Getty Images)

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