I just got the book and it is great. As I'm trying to improve my serve, I jump immediately to the serve part. There is a paragraph that I don't understand in p. 241. " B. Greater rotation of the wrists on the backswing Turn your wrist in towards your hips at the ready position. The more you can turn the wrist in, the more range of motion the racket will be able to create in the serve ..." Look at Fig 27 in you book I can understand how we "turn the wrist in". But I don't how it's gonna affect the serve because when we start taking the backswing, we of course "undo" the "wrist turned in" motion. Could you clarify this point? http://www.gettyimages.com/Search/Detail.aspx? By the way, the pic above is the only one I can find resemble Fig 27 in TennisMastery's book. Look at the wrist of the girl.