Floyd Mayweather Jr., left, fights Andre Berto during their welterweight title bout Saturday, Sept. 12, 2015, in Las Vegas.
Floyd Mayweather Jr., left, fights Andre Berto during their welterweight title bout Saturday, Sept. 12, 2015, in Las Vegas. Steve Marcus AP
Floyd Mayweather Jr., left, fights Andre Berto during their welterweight title bout Saturday, Sept. 12, 2015, in Las Vegas. Steve Marcus AP