Since David Duval has been doing commentary (which I really like, by the way) for the Golf Channel I have gotten quite a bit of interest in going back over his swing and my opinions as to how his game slipped so much. Here I show all the swings my friend Mark Diamond and I took during a practice round for the PGA Championship at Medinah in 1999 when David was ranked 2nd in the world. It was the best golf I have ever seen played: he never missed a shot and was 8 under through 13 holes.