Floyd Mayweather Jr. beats Robert Guerrero, remains undefeated

LAS VEGAS, NV - MAY 04: Floyd Mayweather Jr. celebrates his unanimous decision victory against 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)

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)

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

LAS VEGAS, NV - MAY 04: (L-R) Floyd Mayweather Jr. wraps his arm around the head 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)

LAS VEGAS, NV - MAY 04: Floyd Mayweather Jr. stands in the ring before taking 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 Al Bello/Getty Images)

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)

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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