HI All, I just had an appt with a doctor about my shoulder, and he wants me to do physical therapy for a month, to see if my shoulder gets better. He had Xrays taken. He says I have shoulder impingement related to rotator cuff issues. Anyhow, i told him i play tennis, and he claimed to have worked with James Blake. But he wasn't very forthcoming with whether I should change my tennis game, but he did want me to continue playing. I mentioned serving underhand, and he seemed to think that would be a good idea until my shoulder improves. If I don't see improvement, then the doc wants to do an MRI. My symptons have been for the last 6 months my shoulder has ached at night when sleeping, but my serve has been fine. however, in the last 2 weeks, my serve has started to hurt my shoulder. Oh, I just had surgery in the beginning of June for a meniscus tear in my knee. So, do you all think it is a good idea to serve underhand for the next month or so, until i see improvement?