Resting Del Piero is one of the most stupid things you ever suggested, JBF
Against Ajax he didn't give more than 30%. He, just like the rest of the team, followed the coach's orders and tried to save energy. He wasn't tired, he simply didn't want to exhaust himself. That's why he didn't shine on that match.
He's in fantastic form and physically he looks in top shape. We simply need him in this match that is, imo, gonna be the most important match of our serie A season so far.