Category: Sports & Outdoors Vendor: ETA62 Product Description : Getting a feel for correct body position relative to ball position on the serve (or even groundstrokes) is a problem for many beginning players. The Serve Doctor is a simple yet professional-looking device consisting of an extension pole and Velcro system that attaches to any tennis ball. Just hold the ball in position and have the player hit it right off the rope. It's that simple!
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