© AP Photos
Gianluca Pegolo was the star of the show as the visiting goalkeeper kept out everything that was thrown at home.
Jonathan Biabiany tried his luck from distance, but saw his effort fly over the Siena crossbar.
Marco Parolo was gifted a glorious chance to break the deadlock just before the half-time interval in a goalmouth scramble, but could not keep his shot on target.
Cristian Zaccardo then came closest for the hosts when he had Pegolo beaten, but saw his shot come off the post.