Sidespin can be combined with either topspin or backspin to produce a moving ball that is acted on by a combination of both forces. A ball with topspin and sidespin will drop faster and curve to the left or right, while a ball with backspin and sidespin will tend to drop slowly and curve at the same time. It's not possible to put both types of sidespin on the ball, or topspin and backspin at the same time (if you can, please let me know how!).


