EVANSTON, Ill. (AP) — Freshman Clayton Thorson ran 42 yards for a touchdown while playing turnover-free ball at quarterback, Justin Jackson added 134 yards rushing, and Northwestern beat No. 21 Stanford 16-6 in the season-opener Saturday afternoon.Anthony Walker broke up two passes and had a fumble recovery, and Kyle Queiro intercepted Kevin Hogan's pass in the end zone with about a minute left to seal the win.Thorson scored the game's only TD in the second quarter.