IOWA CITY, Iowa (AP) Iowa was in victory formation and the emotion was about to spill over as dusk settled over Kinnick Stadium.

Spencer Petras took the last snap, took a knee and took off, apparently thinking he could get off the field before the students and other fans pouring out of the end zone seats could catch him.

He barely made it to midfield. That's where he and his teammates were swarmed and the mosh pit formed on the Hawkeyes logo to celebrate No. 3 Iowa's hard-earned 23-20 victory over fourth-ranked Penn State on Saturday.

''It's a pretty special place when the lights go on and the sun goes down,'' Iowa coach Kirk Ferentz said.

Petras threw a 44-yard touchdown pass to Nico Ragaini to complete Iowa's comeback from a two-touchdown deficit, all accomplished while Penn State's offense did next to nothing after quarterback Sean Clifford was knocked out of the game.

The Hawkeyes (6-0, 3-0) took control of the Big Ten West with their 12th straight victory and thrust themselves into the College Football Playoff conversation.

''This was like the biggest of the big-time, which was pretty awesome,'' Ragaini said. ''You don't get moments like this every day, taking advantage of the opportunity. It was a mentally draining game for sure, and physically draining.

''On the sideline I was so emotionally drained that I almost teared up out there because we care about each other so much. We all want each other to succeed.''

An hour after the game, Ferentz choked up as he reflected on his players' locker room celebration.

''It's fun,'' he said, pausing. ''That's what they're supposed to do.''

Penn State (5-1, 2-1) lost for the first time in 10 games and headed back to Happy Valley with a list of injuries that could make its path through the rest of the season difficult.

''It's just a bump in the road,'' Lions defensive end Arnole Ebiketie said. ''We have to get better.''

The Hawkeyes' grinding offense isn't built to play from behind, but it managed to come back in the biggest game at Kinnick Stadium since then-No. 1 Iowa beat then-No. 2 Michigan in 1985.

Iowa won the field-position battle thanks to the work of punter Tory Taylor, who repeatedly pinned Penn State deep in its own end after Clifford went out in the second quarter.

Iowa chipped away with field goals by Caleb Shudak to cut it to 20-16. The winning play came on the first play after the Hawkeyes got the ball at the Penn State 44 with 6:35 left.

Petras rolled to his right and found Ragaini alone on the left side. Linebacker Curtis Jacobs knocked him out of bounds, but not before he got the ball over the goal line. All-America center Tyler Linderbaum was the first man to greet him in the end zone.

Penn State coach James Franklin didn't disclose the nature of Clifford's injury. He was hurt with the Lions leading 17-3 when he took a big hit from linebacker Jack Campbell, and he was out of uniform on the sideline in the second half.

After Ta'Quan Roberson took over for Clifford in the middle of the second quarter, Penn State managed just 50 yards on 46 plays the rest of the way.

''We talk about all of the important statistics all of the time, and we didn't do a good job on any of them,'' Franklin said. ''We did not win the field position battle, we did not win the turnover battle, we did not win the penalty battle, we didn't win the explosive play battle.''

Five of Roberson's series started inside the Penn State 10, and a sixth began at the 11. The sellout crowd of 70,000 had a major impact when the Lions were in their own end, their roars forcing numerous false starts as Roberson's claps for the snap went unheard by his linemen.

On the Nittany Lions' last three possessions, they turned over the ball on downs, Matt Hankins came up with Iowa's fourth interception of the game and they turned it over on downs again.

''We weren't counting on the interceptions but that was a great job there,'' Ferntz said. ''We played physical, knocked their quarterback out - hope he's fine. That's the team we have.''


Penn State: Franklin did not disclose the nature of Clifford's injury. The Lions also lost a couple of key defensive players. P.J. Mustipher, their 326-pound run stopper, went out less than two minutes after kickoff with a left knee injury and didn't return. Neither did safety Jonathan Sutherland, who left in the second quarter with an undisclosed injury.

Iowa: It continues to be all about defense with this team. The offense responded when it had to in the second half, but defense was special throughout. Four more interceptions gave the Hawkeyes a nation-leading 16. The only sour note was an injury to cornerback Riley Moss, who appeared to injure his left knee after an interception.


Iowa beat a Top 25 team for the third time this season and has won six in a row against ranked opponents for the first time since 1960. It was Iowa's first win over a top-five team since beating then-No. 3 Ohio State in 2017.


Iowa hosts Purdue on Oct. 16. The Hawkeyes have lost three of the last four in the series.

Penn State has an open date before hosting Illinois on Oct. 23.


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