This is me playing Pro Tennis Tour at the professional level. First game of the first tournament.
The way you make shots is pretty cool. You press the fire button to "arm" your shot and then you release the fire button to actually make the shot, a little bit like in real tennis if you think about it. To make it interesting, once your shot is "armed", you can't move. In terms of aiming, the way you are positioned in relation to the ball determines where the ball is gonna go. Before you release the fire button, if you press back on the joystick, it's gonna be a lob. If you press forward, it's gonna be a smash.
Cool thing is that you never change sides. You always play either at the front or back of the court. Well, I think it's cool.
You might want to have a brief look at the Pro Tennis Tour manual before getting started.