Well, I've bought this book because I'm a great admirer or Agassi, and I always knew of Gilbert's "dirty" game. And I cant tell you that you become and you really feel much stronger, mentally speaking when you enter the tennis court... And if you play all your tricks right, you'll be winning games, and enjoying it. Make no mistakes, this is NOT a book on dirty schemes and dirty tactics, just a manual on exploring your opponent's weaknesses in your advantage... you'll love it. I've offered one book to my best friend, who hates Agassi and Gilbert in favour of Sampras, ans even him says its one of the best books he read...