No athlete is untouchable.

Someone will always try to argue that LeBron James is better than Kobe Bryant, Kobe is greater than Michael Jordan, or MJ is greater than Bill Russell. Each angle has valid arguments in its defense.

But Muhammad Ali? As far as boxing lore is concerned, he’s the greatest of all time. Even Floyd Mayweather’s strongest supporters might concede that debate.

Just don’t ask Mayweather himself.

In an all-access interview with ESPN’s Stephen A. Smith, the 47-0 fighter set