Instructions
Turn on your Nintendo Wii console and insert the "Wii Sports" game into the Wii disc drive. Click "Play Wii Sports."
Select "Tennis" from the list of games. Select how many human players are playing and choose your Mii character. Click "Start."
Swing the remote forward from low to high and roll your wrist backward when you are about to hit the ball to apply backspin to the ball. The harder you swing, the faster the ball will spin. Adding backspin will also add sidespin, and the ball will curve left or right depending on where your racket hits the ball.
Swing the remote forward from high to low and roll your wrist forward when you are about to hit the ball to apply topspin to the ball. Topspin is especially useful if you need to hit the corners or edges of the court.