WEST LAFAYETTE, Ind. (AP) — Saquon Barkley ran for 207 yards and two touchdowns, Trace McSorley threw three scoring passes, and No. 24 Penn State used a 24-point third quarter as the centerpiece of its 62-24 victory against Purdue on Saturday.

The Nittany Lions (6-2, 4-1 in the Big Ten) converted an interception, a fumbled punt and a failed onside kick into third-quarter touchdowns on their way to a fourth consecutive victory, They snapped a seven-game road losing streak dating to 2014.

"We were talking at halftime about having a sense of urgency, and we came out in the second half with that in mind," McSorley said. "Everyone kind of loosened up in the second half. In the first half, we were playing tense. We weren't playing loose. We came out in the second half and played loose."

Tied at 17 through two quarters, the Nittany Lions outscored Purdue (3-5, 1-4) 24-7 in the pivotal third quarter. McSorley threw a 1-yard touchdown pass to Chris Godwin and for 21 yards to Miles Sanders for another.

Barkley extended the Penn State lead to 48-24 with 13:56 remaining on a career-best 81-yard run along the right sideline. It was the longest touchdown run by a Nittany Lion since Larry Johnson's 84-yarder in 2002 against Illinois.

"We knew we were going to have a battle," Penn State coach James Franklin said. "Early in the game, we just made too many mistakes. We are usually one of the most disciplined teams in football. I don't want to say we're a second-half team, but in the locker room, we decided we were a second-half team. We made plays, and their turnovers were huge."

Purdue, which got two touchdown passes from David Blough, including a 62-yarder to DeAngelo Yancey, led 14-7 and 17-14 in the second quarter.

McSorley finished 12 of 23 of 228 yards and the career-best three TDs. Blough completed 34 of 50 passes for 281 yards. He was intercepted once, which set up a third-quarter TD.

"We had great energy in the first half, and then when we came out of the half ... that's completely on me," said Purdue interim coach Gerad Parker , who took over when fourth-year coach Darrell Hazell was fired on Oct. 16. "When things didn't go our way, we didn't respond."

TAKEAWAYS

Penn State: After upsetting then-No. 2 Ohio State last Saturday, the Nittany Lions started slowly, but completely dominated the second half, winning for the fourth consecutive time in October. McSorley and Barkley gave Penn State the perfect mix of passing and running, helping the Nittany Lions amass 511 yards of offense.

Purdue: In consecutive losses to Nebraska and Penn State, the Boilermakers have been outscored a collective 62-7 during second-half action. Purdue's margin for error is slim to begin with, but the second-half miscues against Penn State produced a brutal outcome.

POLL IMPLICATIONS

The Nittany Lions, coming off their big win against the Buckeyes, should move up a bit in the AP Top 25. (http://www.collegefootball.ap.org/poll )

UP NEXT

Penn State: The Lions host Iowa next Saturday.

Purdue: The Boilermakers play next Saturday at Minnesota

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More AP college football: —www.collegefootball.ap.org