Abstract: A tennis practicing device includes a foldable base frame assembly, a tube pivotally mounted on the base frame assembly, and a ball returning assembly mounted in the tube. The ball returning assembly includes a tubular member consisting of an upper elastomeric section and a lower rigid section, a spring position in the tubular member, and a connecting member. A tennis ball is pre-drilled in its diameter before it is mounted to the ball returning assembly. The connecting member passes through the holes of the ball until an enlarged head end of the member grips the surface of the ball. A first end of the spring is attached to a tail end of the connecting member and the second end of the spring is attached to the lower end of the lower rigid section. The tube has a engaging means, in the form of a knob in an upper portion of the tube to clamp releasably the ball returning means.