NORMAN (AP) — Oklahoma's new attitude took Arkansas State coach Butch Jones by surprise.

Dillon Gabriel completed 19 of 22 passes for 308 yards and two touchdowns — all in the first half — and No. 20 Oklahoma routed the Red Wolves 73-0 on Saturday.
It was Oklahoma's largest victory margin in a season opener since 1917.

"There was a marked difference with this football team than what we saw on video," Jones said. "They're tough. They're physical. I thought they out-athleted us. The speed differential is probably the most glaring I've probably seen in my career."

Gabriel also ran for a score in the first half to help Oklahoma take a 45-0 lead. The Sooners gained 437 yards before the break while holding Arkansas State to 106.

Oklahoma freshman quarterback Jackson Arnold, a consensus five-star recruit, played most of the second half. He completed all 11 of his passes for 114 yards and a touchdown and ran for 39 yards and another score on his 19th birthday.

Freshman Jaquaize Pettaway had nine catches for 56 yards, walk-on Tawee Walker ran for the first two touchdowns of his career and Gavin Freeman scored twice for the Sooners (1-0).

It was Oklahoma's first shutout under second-year coach Brent Venables. The Sooners held the Red Wolves (0-1) to 208 total yards and 10 first downs.

Oklahoma's offense was equally impressive, gaining 642 yards without committing a turnover. Its .909 completion percentage set a school record for games with at least 15 pass attempts.

"You want to see discipline, which we showed, and see some physicality and toughness," Venables said. "We saw that. And then the efficiency, taking care of the ball — we did that on offense."

Colorado transfer J.T. Shrout connected on 12 of 26 passes for 148 yards for Arkansas State. The Red Wolves were shut out for the first time since Georgia held them scoreless in 2019.

Arkansas State committed 14 penalties for 111 yards.

"I know the caliber of football team that we played is very, very good," Jones said. "But we still talk about playing to a standard, and we did not play to a high level to a standard of performance that we talk about. And so all we can do is learn from it."

Drake Stoops scored Oklahoma's first touchdown, a 10-yard catch and run, on the game's opening possession.

Freeman's 82-yard punt return for a score gave Oklahoma a 14-0 lead just over two minutes into the game. It was Oklahoma's first punt return for a touchdown since Dede Westbrook ran one back against Kansas in 2016. Freeman caught a 7-yard touchdown pass from Gabriel to put the Sooners up 28-0.

THE TAKEAWAY

Oklahoma: The Sooners supported their defensive effort by rushing for 220 yards on 49 carries. They possessed the ball for nearly 37 minutes.