I took a tennis ball out to the back of the house.

Big ones can be almost the size of a tennis ball.

"I feel better because I've given him something more than just a tennis ball."

They say it's about the size of a tennis ball.

I just mean it was the size of a tennis ball.

"He could take a white tennis ball, and, at the end of an hour, make you think it was black."

Remember when you got a tennis ball in the eye, Sam?

Then I picked up the tennis ball he'd left behind.

A fruit like a green tennis ball is cut open.

"People are going to be seeing that red color more than the tennis ball," she said.