LAS VEGAS, NV – SEPTEMBER 12: Floyd Mayweather Jr. throws a right at Andre Berto during their WBC/WBA welterweight title fight at MGM Grand Garden Arena on September 12, 2015 in Las Vegas, Nevada. (Photo by Ezra Shaw/Getty Images)
LAS VEGAS, NV – SEPTEMBER 12: Floyd Mayweather Jr. throws a right at Andre Berto during their WBC/WBA welterweight title fight at MGM Grand Garden Arena on September 12, 2015 in Las Vegas, Nevada. (Photo by Ezra Shaw/Getty Images)