Wonder if anyone can help. 18 months ago I damaged my rotar cuff and am hoping to get back into tennis. I am uncertain whether or not the racquet I had been using may be part of the problem. It is a Head Ti.Radical - Titanium. I really do not want to continue using this racquet if it is the cause. Information obtained from the net indicates that the best ones for me to use would be the Prince Graphite Classic OS or Yonex RDS003. Any advice would be greatly appreciated. I play fixtures at an intermediate level.