Senior safety Gabe Lynn insisted No. 18 Oklahoma (5-1, 2-1 Big 12) wasn't overconfident as the two-touchdown favorite lost 36-20 to the Longhorns at the Cotton Bowl in Dallas on Saturday.
"I don't call it a surprise because I think every team in this conference can beat us if we're not playing to the best of our ability," Lynn said. "We didn't come out as hard as they did. They came out a little tougher than us and hit us in the mouth. It's just kind of an eye opener. You hate for it to happen but we have to be prepared each week."
Stoops said Texas made four big plays that essentially won the game for the Longhorns -- two long TD passes, an 85-yard punt return for a touchdown and a 31-yard interception return for another score.
"When you make plays like that, or give up plays like that in these kinds of games it's incredibly difficult to overcome," Stoops said. "Obviously we weren't able to do it. We didn't have as many big plays as well to answer back. To their credit they limited those.
"They made the plays. We didn't. So you go on to the next game."
The Sooners no longer control their own destiny in the Big 12 race, but still have games against two of the three teams that remain unbeaten -- hosting No. 16 Texas Tech on Oct. 26 and visiting No. 12 Baylor on Nov. 7. Oklahoma also faces No. 21 Oklahoma State on Dec. 7.
"We definitely feel like we're still in the running," defensive end Geneo Grissom said.
That said, Stoops wasn't in the mood to talk about such things.
"I've talked to our guys about playing this week against Kansas," Stoops said. "Everybody wants to project to the end of the year. We've been doing it for the last couple of weeks and you can't do it. All we can do is prepare to be as good as we can be for Kansas and that's it."
Oklahoma has won eight straight against the Jayhawks (2-3, 0-2), who have lost 23 straight conference games, dating to a win over Colorado on Nov. 6, 2010.
The Associated Press contributed to this report.