In what Mayweather insisted was the final fight of his career , he beat Berto by unanimous decision .
Floyd Mayweather Jr. fought Andre Berto in a welterweight title boxing match at the MGM Grand Garden Arena in Las Vegas on Saturday , Sept. 12 , 2015 .
In what Floyd Mayweather Jr. insisted was the final fight of Floyd Mayweather Jr. 's career , Floyd Mayweather Jr. Andre Berto Berto by unanimous decision .
Floyd Mayweather Jr. fought Andre Berto in a welterweight title boxing match at the MGM Grand Garden Arena in Las Vegas on Saturday , Sept. 12 , 2015 .