A message to the greatest boxer alive: It's time to shut it down.
I'm begging you. Please.
After left-hooking Ricky Hatton back to Manchester ("Knocking him on his flag," as my uncle said), it is time for Mayweather to hang up the gloves and call it what it is while it is what it is: One of the best boxing careers ever seen. He has nothing left to prove. He's done his bid. It's time to do the Jim Brown.
But that won't happen. You know it. I know it. Mark Cuban, Helio Castroneves ...