Floyd Mayweather Jr. (L) lands on punch on Andre Berto during the fight for the WBO Welterweight World Title at the MGM Grand Garden Arena in Las Vegas, Nevada on September 12, 2015. Floyd Mayweather earned a unanimous decision over Andre Berto to claim his 49th and he says final victim in a glittering unbeaten ring career spanning two decades. AFP PHOTO/JOHN GURZINSKI (Photo credit should read JOHN GURZINSKI/AFP via Getty Images)
