ANN ARBOR, Oct. 18 -- Bryce Underwood spent the second half of Saturday's game on the Michigan sideline helping the freshman who had replaced him, and the Wolverines beat Penn State 21-18 with that freshman at quarterback.

The change came at halftime. Michigan trailed 3-0 after gaining 80 yards, and Underwood, the starter, had completed five of 11 passes for 43 yards with two interceptions. As the second quarter ended, coach Kyle Whittingham told CBS sideline reporter Jenny Dell the offense had "absolutely nothing going."

Tommy Carr, a true freshman, took the snaps from there. He completed five of seven passes for 47 yards and ran for 36 more, Sports Illustrated reported, including a 12-yard touchdown on third-and-9 that made it 21-11 w...