"Tennis is a very microtraumatic activity for which Rodolfo Lisi's text, very attentive to the various aspects to be considered for those who practice the sport of rackets, can prove to be extremely useful. For many years I have been teaching at the University of Pisa to students of Motor Sciences trying to provide a clear picture on how to prevent, identify and treat the main injuries related to sports; therefore I can only be favorably impressed by the enthusiasm with which this text was written.