I finally got through all of Guy Yocom's excellent oral history of the 1986 Masters, and was fascinated by this comment from Jack II, buried near the end:
Jack Nicklaus II: Last fall we were up at Muirfield Village. It was a cold day, and we were hitting drivers on the range. Dad sidled over to watch me. I'm not super long, but after a few shots he said in a quiet voice, "If I could hit my driver like that, I could still win the Masters."
It's true. His distance control with his irons is terrific. He chips extremely well, and he has zero nerves in his putting. If the course weren't so darned long, he could win the Masters.
Of course he could win. We're talking about my dad.