GLENDALE, Ariz. — Penn State defenders clogged every hole, stretched out every outside run, closed with ferocity.
Everywhere that Ashton Jeanty turned, he ran into Nittany Lions. The Heisman Trophy runner-up still went over 100 yards, but he sure had to work for it.
Drew Allar threw three touchdown passes and No. 5 Penn State bottled up Jeanty for a 31-14 win over No. 8 Boise State in the Fiesta Bowl on Tuesday night, earning a spot in the College Football Playoff semifinals.
''We knew who we were going against. We knew we had to have hats to the ball every single play because every play he could break one,'' said Penn State safety Zakee Wheatley, who had an interception and recovered a fumble. ''We did that the whole game.''
The Nittany Lions (13-2, CFP No. 6 seed) opened their first CFP berth with a blowout win over SMU and appeared headed toward the latest lopsided victory in the new 12-team format by jumping out to a 14-0 lead against Boise State.
But the Broncos (12-2, CFP No. 3 seed) have relished the role of underdog, going back to when their brand went national in the electrifying 2007 Fiesta Bowl, and they had an answer.
Boise State galloped back from the early deficit, trimming the margin to 17-14 early in the third quarter, momentum seemingly on its side.
And then Penn State turned the tide for good.