Forehand Quick Fix

If you're coaching mostly recreational players, you can look for an error on the forehand which plagues many tennis players, and which can be easily identified and fixed.

Many players lose power, as well as the ability to hit down the line, by letting their elbows come out (similar to a roundhouse punch) rather than keeping the elbow in through the stroke (similar to a karate punch).

The article goes on to discuss the role of the elbow during the forehand groundstroke.