Andre Berto believes ‘special’ Conor McGregor has a legitimate shot at beating Floyd Mayweather

Andre Berto knows a little bit about Floyd Mayweather. He was the last man to fight Mayweather, in September 2015, prior to Mayweather’s retirement.
Berto boxed 12 rounds with Mayweather, losing a unanimous decision. In other words, he has intimate knowledge of what type of boxer Mayweather, one of the best of all time, is in the present day.
With all of that first-hand intel and a world of respect for Mayweather, Berto still believes Conor McGregor has a chance of knocking off “Mone