I’ve mentioned previously that my shoulder has been hurting when I start playing. Today, it started and never quit. I had a feeling it was due to the rotator cup and/or the amount of weight i put on it during and after a shot. Well, I did some searching around it seems I was right – or pretty close to it. Now, I’m not foolish enough to grab a diagnosis from some internet forum; but I do think the symptoms are so similar that the suggestions given, which have worked for the original poster, are definitely worth a try.