Boxing champion Floyd Mayweather is planning his final fight. He will defend his welterweight world title September 12th against Andre Berto at the MGM Grand in Las Vegas. The 38-year-old has said this will be the last bout of his 19-year career. This is the last of a six-fight deal he inked with Showtime in 2013. Mayweather improved to 48-and-0 in his career with 26 knockouts with a win over Manny Pacquiao in April in the richest fight in boxing history. The 31-year-old Berto is 30-and-3 with 23 KO’s and is a two-time welterweight champion, but is just 3-and-3 in his last six fights.