Pete Carroll and Charlie Weis used to scheme against each other in the NFL. Now the coaches find out who can one-up the other in a college game.

Carroll, considered a defensive guru, and Weis, whose genius with offense helped make the New England Patriots an NFL powerhouse, will be on opposing sidelines Saturday in South Bend, Ind., when Carroll and top-ranked USC go against Weis and No. 9 Notre Dame.

Ex-NFL Coaches Carroll, Weis Match Wits [SFGate]