CHAPEL HILL, N.C. — Mitch Trubisky kept scanning the field, delivering the ball on target with a cool composure for North Carolina — down to when he made the game’s biggest play in the frantic final seconds.

The junior threw a 2-yard touchdown pass to Bug Howard with 2 seconds left to help the Tar Heels rally past Pittsburgh 37-36 on Saturday in the Atlantic Coast Conference opener for two teams that finished 1-2 atop the Coastal Division last season.

“We had talked about before the game that we had an opportunity to establish the identity of this football team,” UNC coach Larry Fedora said. “And I can say there’s a lot of grit in this football team for one, a lot of toughness — all the intangibles that we need to be successful.”

Trubisky threw for career highs of 453 yards and five touchdowns for the Tar Heels (3-1, 1-0 ACC). His main target was Ryan Switzer, who tied a program record with 16 catches for 208 yards and a score.

The Tar Heels never led until the final play and trailed by 13 with 6 minutes left. But Trubisky led a 17-play, 63-yard drive that included three fourth-down conversions in a stunning finish, sending UNC’s players running onto the field to celebrate once they stopped Pitt’s final-play kick return.

>h3?Michigan 49, Penn State 10[/naviga:h3]

ANN ARBOR, Mich. — Michigan quarterback Wilton Speight took a beating last week against Colorado. This week, he spent most of the day standing back and watching his teammates do all the work.

De’Veon Smith led an overwhelming ground game with 107 yards rushing and a touchdown and Karan Higdon ran for two scores and No. 4 Michigan routed Penn State 49-10 in a Big Ten opener.

Michigan (4-0, 1-0 Big Ten) finished with 326 yards rushing and scored six of its seven touchdowns on the ground.

The Nittany Lions (2-2, 0-1) were simply running out of bodies on defense. They came into the game missing three starting linebackers, lost Brandon Smith to a second-quarter targeting penalty then lost Jan Johnson to injury.