Pet Supplies : ALL FOR PAWS Interactive Hyper Fetch Super Bounce Tennis Balls Dog Toy, Pet Safe Toys for Exercise and Training, 2.5 Inch Diameter (6 Pack) : Amazon.com
Bouncing the ball at serve.
A : S & O, Kids, T Tr Rd B T Ball B T Tool,P T B Me W M T T Dr B C $24.80 tropseeds.com