How do you do a tweener?

Obviously, you have to outrun the ball to get in position for it. Basically, it's a trick shot of desperation, made when you have absolutely no other choice. For that reason, it is extremely low percentage. Most of the time when pro's use the shot, they are returning a lob.

To familiarize yourself with the technique, practice it while standing still. Hold your racquet with a Continental or Eastern backhand grip to give your wrist ample snapping flexibility and to get more of the strings on the ball. Turn your back to the net and bend your legs to get a wide base. Now drop a ball right between your legs. This will allow you to swing through contact without banging the racquet on the court or against your body.

When the ball is at shin level, snap the racquet down, squaring the face at impact. Depending on your objective, you can either bring the racquet through the hitting zone with a slight low-to high motion, which will be more of a drive shot, or you can snap up severely, which will produce a defensive lob.

After you get comfortable hitting from a stationary position, incorporate some movement by tossing the ball up and toward the baseline. Instead of running to the side of the ball, go straight at it. As you approach, make sure to overrun it a bit so you can take a full and, more important, safe swing.

As I mentioned, it's low percentage, so don't count on earning points with that shot. Most pro's can't even do it consistently and make the point.

You might want to reword that question, you might get some unseemly answers.

its hard to practice...when it happens, it happens...its pretty much based on luck...and a BIT of skill