Mayweather busts Gilroy's Robert "Ghost" Guerrero

Floyd Mayweather Jr. and Robert Guerrero exchange punches in the first round during a WBC welterweight title fight, Saturday, May 4, 2013, in Las Vegas. (AP Photo/Isaac Brekken)

May 4, 2013 9:42:13 PM PDT
Floyd Mayweather, Jr. beats Gilroy's Robert Guerrero by unanimous decision.

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