sampras had a great serve, but what made it even greater was his ability to serve and volley, and play an all court game. sampras had the edge over agassi because agassi was one dimensional, like many players with 2 handed backhands are.. a one hander is more versatile. you can hit flat, topspin, or slice and dice, yet still get plenty of power.. it also enables a player to stretch out and cover more ground. laver, sampras, federer, graf, navratilova, all seem to have one thing in common. these people are the best of the best.