Re: Laura hits the red dirt - Clay Season Cheering Thread
Backs are OK as long as movement is in one plane - forwards/backwards or side to side. What they don't like is twisting.
Interestingly Andy Murray blames the clay courts for exacerbating his back problem because of the extra rotation used in clay court shots.
If it is the lower back maybe Laura is suffering from similar clay court induced trauma. If it is the upper back it could well be her work on changing the service action.