Pettitte has been sidelined since Thursday with what he says is stiffness in his back. He last pitched on March 17th, where he threw 65 pitches in 3 1/3 innings. At the time, Pettitte was dealing with an elbow issue, but reported no pain after his outing. Now, the back spasms he is experiencing have set him back a few days, something that should cause Joe Girardi and the Yanks some concern. A healthy Pettitte is what the Yankees need. If they need to sit him out for the time being, then I say do it. He is much too valuable to the team going into this season and they need to be cautious. In any event, the last few weeks of fragility with Andy should raise some concern amonst the Yanks. Any time he misses will put more of a burden on the rest of the rotation, one that will include youngsters Ian Kennedy and Phil Hughes.