Seven plays later, Klein rushed for a 5-yard touchdown and a lead the Wildcats wouldn't relinquish.
“You can't turn the ball over,” Stoops said. “It's a mindset; it's a discipline. You can't win like that. It's a 14-point swing in a tight game with a really good team.”
The turnovers may have been sustainable if Oklahoma's defense had forced a few itself. But Kansas State didn't fumble, and Klein didn't throw an interception.
“Sometimes things happen like that,” receiver Sterling Shepard said of the turnovers. “You just have to play through them. But we definitely need to narrow the turnovers down.”
Shepard, a true freshman, led OU wideouts with seven catches for 108 yards and a touchdown.
Even though he was harsher on Jones in his postgame news conference than usual, Stoops still wasn't willing to pin the entire loss on his quarterback. He said the players around him didn't play well, either, repeating a line from Big 12 Media Days.
“I don't think it's fair to say, ‘Landry Jones,'” Stoops said. “The guys around him weren't consistent. Some of the plays that stick out to everybody weren't good.”
The loss is just the fourth at home Stoops has suffered in 13-plus seasons in Norman, and the first to a ranked team. The Sooners had been 14-0 under Stoops against ranked opponents before Saturday.
Oklahoma had a bye last week, and now has another one before traveling to face Texas Tech, which upset OU last year at home and hasn't lost in Lubbock to the Sooners since 2003.
Jones turned down the chance to be drafted into the NFL last April, and one of the reasons he has cited was the desire to compete for a national championship.
That seems unlikely after Saturday's loss, although not impossible, he said.
“Typically every year there's a one-loss team in the championship game,” Jones said. “It's still out in front of us.
“It'll definitely be tough if we lose another one.”