I have noticed that i rotate my left foot outwards while doing the backswing of a forehand topspin as a right hander. I am pretty sure this causes me to overrotate my pelvis, as when I video myself i can see the racket behind my back. When I watch pro players play, most of them don't rotate it, some do it slightly. What is correct? How should the left foot behave during the forehand topspin? It feels weird when I don't move it. Should it rotate slightly inwards (while keeping toes and heel on the ground) on the horizontal axis when I put the weight on the right foot?
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