Boulder, Colo. ? Clinging to a seven-point lead with two minutes remaining, Oklahoma had one more big play in its arsenal.

Jason White threw a 59-yard touchdown pass to Mark Clayton with 1:59 left, and top-ranked Oklahoma survived a scare to beat Colorado, 34-20, Saturday night.

The Sooners (8-0 overall, 4-0 Big 12 Conference) built a 27-7 third-quarter lead before Colorado closed to 27-20 with two touchdowns in the fourth quarter.

Facing a third-and-six from their 41 with 2:13 remaining, White hit Clayton along the left sideline, and the receiver cut back and outraced the Colorado secondary for the clinching score. It was White’s third TD pass of the game and the second time he collaborated with Clayton.

“Jason put it right there when he needed to, and Mark was sensational,” Oklahoma coach Bob Stoops said. “What a run, what a catch. What execution, too.

“Our character was tested. Our toughness was tested. Our guys stood in there and made the plays that made a difference.”

White said the Sooners were “just looking to move the chains and get a first down, stay in bounds and keep the clock moving. The next thing I knew, Mark was in the end zone.”

Clayton was surprised to be so open in the left flat.

“I turned around and saw a lot of grass,” he said. “We needed a play. That was big.”

Joel Klatt had three touchdown passes for Colorado (3-5, 1-3), which entered the game with the worst scoring defense in the country (40.1), but played the Sooners tough.

“I don’t generally like moral victories,” Colorado coach Gary Barnett said. “But at this point in time, we’ve got to accept this as one.”

Colorado fullback Chad Gardner, front center, is surrounded by Oklahoma defenders Derrick Strait (2), Jonathan Jackson (49), Wayne Chambers (15) and Teddy Lehman as Gardner is brought down after a short gain. The top-ranked Sooners rolled the Buffaloes, 34-20, Saturday at Folsom Field in Boulder, Colo.

Colorado had surrendered more than 40 points in each of its last five games, four of them losses.

“Our guys can walk away knowing they stood toe-to-toe with what has been labeled the best team in the country,” Barnett said, “and they had a chance to win it.”

Colorado, smothered by Oklahoma’s defense for most of the second and third quarters, pulled off a fake punt and a fake field goal on a 76-yard scoring drive early in the fourth.

Punter John Torp’s 20-yard run on the fake punt was Colorado’s initial first down rushing of the game. The Buffaloes also were successful on a fake field goal when their pass was intercepted, but the Sooners were whistled for pass interference. Tailback Brian Calhoun capped the drive, turning a short pass into a 21-yard scoring play with 11:41 remaining.

The Buffaloes then went 61 yards in nine plays, with Klatt passing nine yards to Derek McCoy for the score with 5:03 left. Mason Crosby’s extra point was blocked by Brodney Pool, leaving the Sooners with a 27-20 lead.

White and Clayton hooked up five plays later.

No. 14 Nebraska 28, Iowa State 0

Lincoln, Neb. — Josh Bullocks blocked a punt to set up a touchdown and returned another blocked punt for a score as Nebraska beat Iowa State.

The victory avenged Nebraska’s 36-14 loss last year in Ames and assured the Cornhuskers (7-1, 3-1 Big 12) of their 42nd winning season in 43 years.

Iowa State (2-6, 0-4) hadn’t been shut out in a school-record 138 games since losing, 41-0, to Kansas University in 1991. The Cyclones lost their sixth straight game and their 13th in a row in Lincoln.

Nebraska held the Cyclones to 230 yards while posting its second shutout of the season. The Huskers beat Troy State, 30-0.

No. 18 Okla. State 38, Texas A&M 10

College Station, Texas — Tatum Bell ran for 196 yards and three touchdowns and became the third player in Oklahoma State history to have back-to-back 1,000-yard rushing seasons.

The Cowboys (7-1, 3-1 Big 12) tuned up for their showdown next week with No. 1 Oklahoma by winning their seventh straight game. Oklahoma State has beaten the Sooners the past two seasons.

The Cowboys also won at Kyle Field for the first time since 1983. The Aggies (3-5, 1-3) are in danger of their first losing season since 1982 in Dennis Franchione’s first season at the helm.

No. 19 Texas 56, Baylor 0

Waco, Texas — Freshman quarterback Vince Young ran for 101 yards and two touchdowns for Texas.

The Longhorns (6-2, 3-1 Big 12) set the offense on cruise control from the start, rolling to a 35-0 halftime lead in Young’s second start at quarterback. It was Texas’ first shutout of the season and its second in a row over Baylor (3-5, 1-3).

It also was Texas’ second consecutive easy win since a crushing 65-13 loss Oct. 11 to Oklahoma.