This is one of the best tennis ball machine drills for accuracy and groundstrokes consistency.
The ball machine will feed balls deep to my backhand side; there are 3 cones positioned on the same side with the ball machine:

- 1 on the left of the ball machine, about half-way between service line and baseline, close to the singles sideline;
- 1 on the right of the ball machine, half-way between service line and baseline, and close to the singles sideline;
- 1 cone also to the right of the ball machine, just inside the service line and close to the singles sideline.

My task will be to practice series of 3 shots: backhand deep down-the-line, backhand deep cross-court, and backhand short cross-court.
While the first two backhands (deep down-the-line and deep cross-court) are easier to execute, the third one (short cross-court) requires a lot more spin and placement control; for the third shot come with the racquet more around and hit the outside of the ball to create the angle and clear the net.

Technical elements to be observed:
- Prepare with the racquet behind the path of the incoming ball before it bounces on your side.
- Grip: eastern backhand (one-handed backhand)
- Non-dominant hand cradles the racquet neck, elbow elevated
- Racquet head higher than the shoulder level
- Load the weight on the outside foot, then transfer it onto the front foot when swinging at the ball
- Swing from low to high to meet the ball, while separating the hands to keep the body sideways and in balance.