Grip changes are huge decisions for pros, because in the short term they're uncomfortable and greatly affect feel. So I told Tiger, "Look, I just want to show you something. Just keep an open mind and try it for me, OK?" He looked at me skeptically. I demonstrated the grip I wanted him to try, then put his left hand on his 5-iron and showed him how I wanted him to hold the club more in his palm. He immediately said, "I can't do this." I quickly said, "Yeah, I know it feels weird, but just try it." He took the new grip, placing his right hand also with more of his palm, and waggled the club. "There is no way," he said. I repeated my urging, putting a ball in front of him to hit. He got over the ball and complained, "I can't even cock my wrists." I said, "Just hit one." He stood over the ball for a longer time than usual, then swung. The sound of the impact was distinctive. Tiger's shots always made a great sound, but this was even more "flush." The ball flight was ideal as well. Tiger was visibly astounded that he'd hit such a perfect shot with such an uncomfortable feeling. He looked at me and said, "Show me that grip again." I put his hands on the club, and he once again said, "I can't hit the ball with this grip." I answered, "You just did." He hit two more shots solidly and went, "Wow." After about a dozen more balls, he looked at me and said, "I'm going with it."