After dominating on offense in the first half, holding a 219-54 advantage in total yards but trailing, 7-5, the Nittany Lions came out strong in the third quarter and scored on their first two drives behind the running of Barkley.
The Hawkeyes drove into Penn State territory on their ensuing march, but Wadley fumbled on a hit by free safety Marcus Allen and cornerback Grant Haley recovered at the 25.
Iowa drove to the Penn State 18 but Miguel Recinos’ 35-yard field goal attempt was blocked by strong safety Troy Apke.
On the next play, Nate Stanley, who had been just 4 of 11 for 27 yards to that point, found Nick Easley in the end zone for the touchdown with 37 seconds remaining in the half.
The Nittany Lions moved the ball into Iowa territory on each of their first six possessions in the first half but managed just three points, a 19-yard field goal by Davis in the first quarter.
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