Mt. Lebanon running back Luke Hagy needed a lift from his teammates. Then, he carried the Blue Devils the rest of the way.

Hagy atoned for two first-quarter fumbles by rushing for 153 yards and the winning score to lead Mt. Lebanon to a 14-10 victory against Upper St. Clair Friday night at Mt. Lebanon Stadium.

"My teammates had a big impact on that," Hagy said. "I was a little upset after fumbling. They came up and picked me up."

The Blue Devils scored their 14 points in the fourth quarter to clinch their first undefeated regular season since 1981. It was Mt. Lebanon's sixth come-from-behind victory this year.

"They stayed with it tonight," Mt. Lebanon coach Chris Haering said. "We've done that all year. Nobody ever panics, which is pretty neat about this team."

With the victory, Mt. Lebanon (9-0, 5-0) clinched its first Class AAAA conference championship since 2003 and denied the Panthers (7-2, 4-1) their first conference crown since '06.

Mt. Lebanon forced two fourth-quarter turnovers to overcome a two-score deficit, a fitting end to a Blue Devils' win that started with two turnovers of their own in the first quarter. Hagy fumbled the game's opening kick, giving Upper St. Clair possession at the Blue Devils' 37. Panthers quarterback Dakota Conwell scored on a 4-yard run five plays later to give Upper St. Clair an early 7-0 lead.

Hagy fumbled again on the Blue Devils' ensuing possession, and though the Panthers' failed to capitalize, Hagy's confidence was shaken.

"I was a little conscious about the moves and cuts I usually make," he said. "I think I was a little shaky on whether to make them,"

Upper St. Clair added to its lead in the third quarter when Killan Mulkern made up for an earlier miss by kicking a 32-yard field goal with 18 seconds remaining in the period.

Then, Hagy took control.

He used a couple highlight-reel stiff arms on an 84-yard kickoff return that gave the Blue Devils the ball at the Panthers' 9. Mt. Lebanon then converted a fourth-and-goal from the 2 when quarterback Pat Goff connected with Paul Lang for a touchdown. With its starting kicker injured, Mt. Lebanon opted for a two-point conversion and trailed 10-8.

After the teams traded a pair of stalled drives, the Panthers took possession at Mt. Lebanon's 47 with 6:14 remaining. Panthers' running back Connor Scott fumbled on the first play and Lang recovered at Upper St. Clair's 46.

Scott said he thought he was down before the ball came loose.

"I thought I reached for one more yard and some guys grabbed it," he said. "You can't blame one call, though. It's the entire game."

Then Hagy continued to dominate. He took handoffs on five of the Blue Devils' next six plays and scored on a 26-yard run to give the Blue Devils their first lead of the game.

Conwell threw an interception on the next play, but Upper St. Clair had one more chance to win the game after the Blue Devils failed on an accidental fourth-down conversion attempt.

Yes, accidental.

Mt. Lebanon faced fourth-and-6 from Upper St. Clair's 47 and Haering asked his offense to go on the field to try to lure the defense offside.

"The center and the quarterback ended up exchanging the ball," he said. "That was one of those 'Oh no.' "

Hagy threw an incomplete pass after a panicked Roth pitched him the ball.

The Panthers took over with 1:10 remaining but could not get closer than the Mt. Lebanon 34.

"That's a very good offense that they put the brakes on tonight," Haering said. "We've kind of been a bend but don't break defense all year."