Freshman Jimmy Clausen will start for Notre Dame against Penn State on Saturday. "I think he's ready to run the offense. If I didn't think he was ready I wouldn't do this," coach Charlie Weis said Tuesday. "I'm not going to play musical chairs with our quarterbacks." Saturday's 33-3 loss Saturday to Georgia Tech was the worst season-opening loss in Notre Dame history. It was the third straight game the Irish were soundly beaten, dating back to a 41-14 loss to LSU in the Sugar Bowl and a 44-24 loss to USC in the regular-season finale.