I don't know if I tore my deltoid - above the bi-cep with a serve or b-hand. When I hit a back hand it is quite painful intially then it warms up during the match but then it throbs and I have no stregnth in it after. Is the deltoid condidered part of the Rotator? I ice it and rubber tube stretch/curls etc. but it seems weak. Does the deltoid have a lg affect on serve and the forehand?