Classic Tennis games: Tennis Game | China Open | Tennis Master | Yahoo Games Tennis | Play Tennis Champions
Slightly different games: Crazy Tennis | Galactic Tennis | Free Squash | Twisted Tennis
All about Tennis: Tennis Rules | The History of Tennis | Various Tennis Topics

Play Yahoo Games Tennis

A bit tricky to navigate and control, but really fun after your learn how to play
Use the mouse to move, and click the left mouse button to hit, you do not have to release the mouse button to swing.
Check out the overhead board at end of each game for the ball's max speed, match length and score.