Seth Doege acknowledged that some Texas Tech players probably had their minds on the big win at Oklahoma and weren't as focused on Iowa State.
Doege threw for a season-low 171 yards as the 19th-ranked Red Raiders lost 41-7 to Iowa State on Saturday night.
"Tonight kind of proves that maybe some of us were still on Cloud Nine," Doege said. "Today you could tell that some guys weren't really mentally into it. And I made some mental mistakes, so it's a team effort."
Texas Tech didn't get a touchdown pass for the first time in five years.
Texas Tech coach Tommy Tuberville said Doege and his teammates will rebound, and the 41-38 win over third-ranked Oklahoma last week will fade.
"Obviously, there won't be the phone interviews for players and the attention on campus, and we go back to reality," he said. "Last week was different and this one was definitely different and next week will be different."
The Red Raiders play at Texas next week.
Redshirt freshman Jared Barnett threw for a touchdown and ran for another and the Cyclones held the ball about twice as long as Texas Tech did as Iowa State shocked the Red Raiders.
Making his first start, Barnett's mobility gave the Red Raiders defense fits. He rushed for 92 yards on 19 carries and completed 14 of 26 passes for 144 yards. His touchdowns were career firsts.
It was the largest margin of victory over a ranked team for Iowa State since the Cyclones beat No. 20 Nebraska in Ames by 22 points (36-14) in 2002.
Doege completed 16 of 32 passes for the Red Raiders (5-3, 2-3 Big 12). He threw two interceptions, lost a fumble and gave the Red Raiders their lone score on an 8-yard touchdown run. Texas Tech had a streak of 69 games, dating back to a 12-3 loss to TCU in 2006, with a touchdown pass snapped.
Duran Hollis broke free for a 71-yard touchdown run early in the third quarter and Iowa State (1-4, 4-4) rolled up 368 yards rushing against Texas Tech's 105th-ranked rushing defense. The Red Raiders were giving up an average of 205 per game coming into the contest.
For the Red Raiders, the game was a surprising letdown after snapping Oklahoma's 39-game home winning streak.
For the Cyclones, it was the first game with at least 300 yards rushing since 2001 when the Cyclones beat Kansas 49-7
James White and Jeff Woody each scored rushing touchdowns.
It was the second win over a ranked team in as many seasons. The Cyclones beat No. 22 Texas 28-21 last season. Before that win it'd been about 20 years since ISU topped a ranked team on the road.
It was also the second straight win over Tuberville for Cyclones coach Paul Rhoads, who was Tuberville's defensive coordinator at Auburn in 2008. The Cyclones beat the Red Raiders 52-38 last year in Ames.
The Cyclones kept the ball away from the Red Raiders' offense by keeping it on the ground.
In a drive that spanned the third and fourth quarters the Cyclones held the ball for 16 plays that gobbled 8:40 off the clock.
Iowa State stayed on the ground to start the second half and on the third play, Duran Hollis, a redshirt freshman who had just 11 yards coming into the game, took a hand off from Barnett and broke through the line to go 71 yards and put the Cyclones up 31-7.
He got free when Red Raiders tackle Kerry Hyder took a wide step and Cqulin Hubert got blocked.
The Cyclones ran the ball well in the first half, keeping the Red Raiders off the field. But even when Texas Tech had the ball it couldn't sustain drives.
The Red Raiders had a shot to score on the first drive of the second quarter but failed to convert a fourth-and-1 from the 2. Aaron Crawford was stopped for no gain and Iowa State took over.
Doege got the Red Raiders' lone touchdown midway through the second quarter when he faked a hand off and scooted to the near side from the 8-yard line. At about the 3, Doege leaped over safety Durrell Givens and got into the end zone to whittle the deficit to 21-7.
Texas Tech's offense, which was in sync throughout last week's 41-38 win at Oklahoma, sputtered early. The Red Raiders punted on their first three possessions and then turned the ball over twice.
The Cyclones went up 21-0 at the end of the first quarter, holding the Red Raiders scoreless in the opening period for the first time this season. ISU got a touchdown off an interception of a Doege pass by safety Ter'Ran Benton, who returned it 40 yards to the Red Raiders 1.
Barnett, who got his first career rushing TD to put the Cyclones up 7-0, hit Darius Dark for a 2-yard score to make it 21-0.
The Cyclones added a 42-yard field goal to lead 24-7 at halftime.