Following Novak Djokovic’s win over Radek Stepanek at the U.S. Open, commentator Darren Cahill interviewed the silly Serbian. During the interview, Novak did another of his infamous impressions, this one of Johnny Mac. And McEnroe was game. He came down from the booth and joined him on the court. Hilarity ensued.

Wow. I really didn’t think Novak would have time to chase down this shot. He is an incredible player to be able to accomplish feats like this while playing tennis. I’m not sure what tournament this was from but watch this clip. What a talented player.