Why Players Use Too Much Shoulder on Forehands
I was watching players at the club this weekend, and noticed a number of them use too much shoulder on their forehand strokes, both drives and loops. The problem with this is when you use a lot of shoulder, you aren't using your full body rotation. The key is to rotate the shoulders, not stroke with them. Otherwise, you lose power (which also leads to a loss of control), plus you'll probably eventually hurt your shoulder.
Older players often do this because of muscle stiffness, and so don't rotate the shoulders back. If you don't rotate the shoulders back, you can't rotate them forward. And so their stroke becomes mostly arm.
Beginning juniors, especially when very young, are natural mimics and so often copy what they see others do, whether it's good or bad. But even if they copy good strokes, and learn to backswing properly, sometimes they stop their shoulder rotation early on the forward swing, and so end up using too much arm at the end, and losing the power from the body rotation. It's important to rotate forward through the stroke, and not stop early and...