Ames, Iowa ? Jason White and a dominating defense made top-ranked Oklahoma’s tuneup for Texas look easy.

White tied a school record with five touchdown passes while throwing for a career-high 384 yards, Mark Bradley returned a kickoff 100 yards for a touchdown, and Oklahoma smothered Iowa State’s offense in a 53-7 win Saturday night.

The Sooners (5-0, 1-0 Big 12 Conference) piled up 613 yards in their third straight game with more than 50 points and now can turn full attention to their annual showdown with No. 13 Texas Saturday in Dallas.

“I do like the way we played,” Oklahoma coach Bob Stoops said. “Everyone all week wanted to talk upset and us not being ready to play and looking forward to Texas. That’s not the case.

“Our guys understood they have to play … and they want to play well when they play.”

Iowa State (2-3, 0-1) played stout defense early and kept Oklahoma out of the end zone on its first three possession. But the Cyclones couldn’t get any pressure on White and eventually were done in by the Sooners’ speed.

There was no better example than White’s short flip to Will Peoples on a screen pass. Peoples simply outran the defense to complete a 45-yard scoring play that made it 29-0 early in the second half.

White also threw scoring passes of 24 and 12 yards to Mark Clayton, 15 yards to Jejuan Rankins and 39 yards to Bradley. White finished 26-of-34 with completions to 10 receivers and no interceptions.

“I’m the luckiest guy in America,” said White. “I’m surrounded by great players. All I have to do is do my job and they are going to do the rest. It showed tonight.”

Oklahoma's Dan Cody flattens Iowa State quarterback Austin Flynn during the first half. The Sooners clubbed the Cyclones, 53-7, Saturday in Ames, Iowa.

And then there was that Oklahoma defense, ranked fifth nationally going in. Iowa State’s first 14 plays produced only 19 yards, and the Cyclones managed just 234 yards for the game.

The swarming Sooners harassed Iowa State’s redshirt freshman quarterback, Austin Flynn, from the outset. Flynn was 6-of-17 for 88 yards, was intercepted twice and sacked six times.

“We made a lot of mistakes,” ISU receiver Jack Whitver said. “A lot of times we were in second and long and third and long. We just didn’t make plays. There’s no one out there on offense that can say they played a good game as far as I’m concerned.”

Iowa State avoided being shut out for the first time in 136 games when JaMaine Billups returned an interception off reserve Paul Thompson 77 yards for a touchdown with 10:48 left.

The Cyclones’ celebration was short lived. Bradley fielded the kickoff at the goal line, sprinted up the middle, cut toward the right sideline at midfield and easily outran the pursuit to make it 46-7.

“I caught the ball and just took off,” Bradley said.

Oklahoma State 56, Louisiana-Lafayette 3

Stillwater, Okla. — Darrent Williams returned two punts for touchdowns, and reserve Vernand Morency ran for 189 yards and two scores as Oklahoma State rolled. Oklahoma State (4-1) was sluggish at the start, but quickly turned this one into a blowout in its final nonconference tuneup before getting back into Big 12 action next week.

Oklahoma State trailed for the first time since its season-opening loss to Nebraska after Louisiana-Lafayette recovered Tatum Bell’s fumble and Sean Comiskey kicked a 40-yard field goal late in the first quarter.

The orange-clad crowd of 44,700 went silent as the Cowboys responded with a seven-play, 10-yard drive that resulted in a punt. OSU went into the second quarter down 3-0.

But the good times didn’t last long for the Ragin’ Cajuns (0-6) as the Cowboys ran off 28 straight points in the second quarter. Morency scored on touchdown runs of 1 and 68 yards, D’Juan Woods caught an 18-yard touchdown pass and Williams returned a punt 78 yards to all but seal the win.