The purpose of this section is to present the general guidelines for rehabilitating an injured tennis player. The focus is on treating the most common injury pattern of overhead athletes, i.e., rotator cuff pathology with secondary bursitis and finally microtraumatic instability. The pathologic cascade starts with an overload of the dynamic stabilizers, and if not recognized and not treated appropriately, the affected tissues will decompensate in this stage and result in chronic tendinitis. In case of a misinterpretation of the athlete's symptoms and a therapeutic mismanagement, the dynamic overload increases successively and ends up in a static overload of the capsuloligamenteous restraints. A static overload in terms of a capsular elongation has to be suspected if competent and specific physical therapy does not succeed in alleviating the athlete's symptoms. The rehabilitation program concerns a three-phase approach. It begins with the acute phase, followed by an intermediate phase, and finally the return to sports phase. Weight-bearing exercises are an integral part of the rehabilitation program. Specific criteria are discussed to determine when the athlete can return to unrestricted playing.