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LAS VEGAS, NV - APRIL 14: WBC/WBA welterweight champion Floyd Mayweather Jr. is interviewed by members of the media before he works out at the Mayweather Boxing Club on April 14, 2015 in Las Vegas, Nevada. Mayweather will face WBO welterweight champion Manny Pacquiao in a unification bout on May 2, 2015 in Las Vegas. (Photo by Alex Menendez/Getty Images)

LAS VEGAS, NV - APRIL 14: WBC/WBA welterweight champion Floyd Mayweather Jr. is interviewed by members of the media before he works out at the Mayweather Boxing Club on April 14, 2015 in Las Vegas, Nevada. Mayweather will face WBO welterweight champion Manny Pacquiao in a unification bout on May 2, 2015 in Las Vegas.  (Photo by Alex Menendez/Getty Images)