Fotogallery:   

AP In this May 10, 2008 file photo, Andy Roddick, of the United States, foreground, touches his arm prior to retiring in the third game of the first set - Foto

In this May 10, 2008 file photo, Andy Roddick, of the United States, foreground, touches his arm prior to retiring in the third game of the first set

In this May 10, 2008 file photo, Andy Roddick, of the United States, foreground, touches his arm prior to retiring in the third game of the first set - Lunedì 19 Maggio, 04:16 PM
of the men's semi-final match against Stanislas Wawrinka of Switzerland, at the Rome Master tennis tournament, in Rome.