After watching a whole lot of groundstrokes and serves, it seems that pros really don't swing too fast before contact, but they seem to accelerate alot faster when they make contact. Anyone else notice this trend? It's like they are "finding" the ball first before they accelerate through it. Roddick isn't the best example, but pretty much all pros that I've watched so far have this in common. http://www.youtube.com/watch?v=V-D32RwsD_w As you watch Roddick from his backswing to moving the racquet foward, you'll notice the racquet really doesn't take off till slightly before it makes contact with the ball, when the racquet DOES make contact, then it really starts to accelerate, much faster then the racquet's initial foward acceleration into the ball. Here's a video of Tommy Haas practicing http://www.youtube.com/watch?v=tDiNRVv_0zU&mode=related&search= Notice how you can easily track when the racquet is moving foward initially, but when Haas makes contact, the racquet sort of blurs out as he starts accelerating through the ball.