Welcome to the Richard Gere "Yes, I do know how to throw a baseball" Club. It's pretty exclusive...just ask Stephen King.
Seriously, for a 71 year old man, Gillick has some pretty impressive pitching form there. I'm going to guess that this pitch was a strike...or at least made it to home plate.
Can you tell that Gillick was a pitcher in his heyday almost 50 years ago?