Lubbock, Texas ? It was billed as a showdown between the nation’s top-ranked offense against the stingiest defense.

B.J. Symons and Texas Tech never had a chance.

Jason White threw for 394 yards and four touchdowns, Kejuan Jones scored five TDs and Oklahoma’s defense intercepted five of Symons’ passes, keeping the top-ranked Sooners on track for a berth in the national-championship game with a 56-25 victory Saturday.

“Sometimes I thought we were able to confuse him with our coverages,” Oklahoma cornerback Derrick Strait said of Symons. “We knew it was going to be a long day of work. It’s a game where it’s up to you to try to stop them.”

The Sooners (12-0, 8-0 Big 12) finished off their 10th unbeaten regular season in 65 years and need only to win the Big 12 title game Dec. 6 in Kansas City to assure a Sugar Bowl bid.

Oklahoma, which last went unbeaten during its national-championship season in 2000, has won 13 straight games — the longest current streak in Division I-A.

Tech (7-5, 4-4) entered the game as the nation’s top offense by more than 80 yards, and Symons was poised to break Ty Detmer’s 13-year-old NCAA Division I-A single-season record for passing yards.

Oklahoma hadn’t allowed a touchdown in three straight games and boasted the nation’s top-scoring offense.

An intriguing matchup on paper turned into yet another Sooners rout.

Whether it was the swirling West Texas wind or Oklahoma’s relentless pass rush, Tech couldn’t keep pace with the high-scoring Sooners, who surpassed the 50-point mark for a school-record seventh time this season.

Oklahoma co-defensive coordinator Mike Stoops, who’s rumored to be front-runner for the head-coaching job at Arizona, put the clamps on Tech’s pass-happy offense for the fourth-straight year.

Symons broke Detmer’s mark in the second quarter, but finished with a season-low 230 yards on 31-of-53 passing. The 6-foot-1 senior, hobbled by a knee injury, threw 10 interceptions in his final two home games.

“He, along with 12 other people, failed to make routine plays,” Tech coach Mike Leach said. “Apparently he wasn’t coached well enough to do that, at least not this week.”