LAWRENCE, Kan. (AP) - Apparently, Kansas' answer at quarterback isn't as foolproof as coach Charlie Weis thought.
BYU transfer Jake Heaps passed for only 16 yards - including minus-2 yards in the second half - and the Jayhawks couldn't muster much momentum after No. 18 Oklahoma erased a two-score deficit in what turned into a 34-19 defeat on Saturday.
Weis blamed the wind as a big reason why Kansas completed only five passes in the game. But he also didn't rule out moving away from the passing game in the future.
''I have to wait and see where we are,'' Weis said. ''Obviously throwing for (16) yards in a college football game, I don't care if you're playing the '85 Bears, that's not acceptable.''
It was the fewest yards passing for Kansas since throwing for 15 against Nebraska in 2010.
When Weis realized passing wasn't going to work, he twice inserted freshman Montell Cozart at quarterback because he's more of a running threat than Heaps.
Cozart rushed three times for 11 yards and did not attempt a pass.
''We planned on using him against the wind,'' Weis said. ''We knew there was going to be about 14 mile per hour wind. From our bench going that one direction the wind on the field was rather significant and the passing game really wasn't going to be very efficient.''
Oklahoma's Blake Bell didn't have nearly as much trouble throwing the ball, passing for 131 yards and two touchdowns for the Sooners (6-1, 3-1 Big 12).
Oklahoma, which had its national championship aspirations cast aside by Texas last weekend, had another scare early as Kansas (2-4, 0-3) built a 13-0 lead behind a heavy ground attack.
James Sims, who finished with 129 yards rushing for Kansas, collected 63 yards on eight carries during the Jayhawks' opening drive, which ended when Heaps hit Jimmay Mundine from a yard out for a 7-0 lead.
Kansas stuffed Bell and the Oklahoma offense in the early going, and they got the ball back late in the first quarter. This time, Darrian Miller ripped off a 38-yard run, and Kansas took advantage of a pass interference penalty before Sims scampered 11 yards for a 13-0 lead.
That's when everything started to unravel.
The Sooners got within 13-6 on Bell's 16-yard touchdown toss to Jaz Reynolds, and then Weis elected to take the redshirt off Cozart.
''For the most part, the game plan was to have me in the game and manage the game and have Montell come in there and throw some different looks at them,'' Heaps said. ''I'm not too concerned about everything else. All I can concern myself with is what I can do to help my team win.''
The freshman quarterback went backward 11 yards in his first three plays under center, and the Jayhawks were forced to punt. Oklahoma came after it and blocked it through the end zone for a safety.
On the Sooners' next offensive play, Lacoltan Bester took an end-around and threw a 49-yard strike to Shepard, who had beaten Jayhawks cornerback Dexter McDonald, for a soul-crushing touchdown and a 15-13 lead.
''I knew it was something we've been practicing, and I've been throwing the ball ever since high school,'' Bester said. ''I played quarterback, so it was just like going back home and throwing the ball in the yard.''
Michael Hunnicutt's 37-yard field goal extended the lead just before halftime.
''I feel like we get complacent as a team because we're up 13-0 on OU and who would have thought that?'' defensive lineman Keon Stowers said. ''Once something goes wrong, you start seeing those long faces.''
It got worse for Kansas in the second half. The Sooners threatened to put the game out of reach in the third quarter when Shepard hauled in his second TD pass, this time from Bell.
The Jayhawks tried to make it interesting in the fourth quarter, when they blocked a punt deep in Oklahoma territory. Sims promptly scored from 6 yards out to pull them within 25-19, but the extra point was blocked and returned by Aaron Colvin to give the Sooners two points.
''You could just feel the atmosphere of the whole team going down,'' Stowers said.
The Sooners marched down field for another touchdown that put the game out of reach.
''Always want more. There's still a lot of plays to be made out there,'' Bell said, ''but I think we're headed in the right direction.''