I periodically have arm pain that I have assumed is tennis elbow. I don't always have a problem, but it generally flares up after I go out and practice serves. My thought is that either I am not warming up/stretching enough before I start serving or I am just over doing it. I was using a poly hybrid and since I have switched away from poly it seems to have helped. Generally on the first few serves I fell pain/tightness on the inside of my elbow (if the forearm was on a table face up). I little rubbing and this generally loosens up and is okay. But, pain will start to develop just above and below my elbow. If I give it a couple of days rest it will be okay again for a while. Again, if I go out and play (without having done any serve practice within a couple of days) I generally don't have a problem. I am hoping that I am just not getting a proper warm up or stretching my arm properly before I begin serving. Do you have any suggestions?