Another abysmal first half from the TCU offense was too much to overcome against a team that is 55-6 under Mike Gundy when leading at halftime.
"When you play at someone else's place, you have to play to win," head coach Gary Patterson said. "We hadn't been down in the red zone very often, but when you get down there, you have to get more than three points."
The TCU defense hauled in three first half interceptions, but the TCU offense failed to score in the first half for the third time this year.
Trevone Boykin had just 27 yards passing in the first half, and in the second quarter, Gary Patterson opted to make a change at the quarterback position.
Tyler Matthews relieved Boykin, but on Matthews first play, a bad handoff exchange created a fumble. The Frogs finished with four turnovers.
Once again, the TCU defense kept the Frogs in the game despite repeatedly having their backs against the wall after the offense turned the ball over.
Gary Patterson emphasized that credit goes to OSU's defense that leads the Big 12 in takeaways.
"I think they have some good players," Patterson said. "They're leading the league in takeaways, but I think we won that battle today. When you go on the road, there's not anything else you can talk about. When you want to win ballgames, you have to go make plays. We did at Boise and against West Virginia last year. You have to find a way to make plays at the end of the game."
Seven first half points for OSU came on a Josh Stewart punt return for a touchdown, and the other ten points TCU allowed were all off turnovers. Patterson said the Stewart return was a momentum changer that should have never happened.
"It was a big one," Patterson said of the return. "We shanked [a punt] and then we over kicked it. Then, we started doing what we were supposed to do and started punting it down the sidelines and not giving the guy an opportunity to catch it. We knew how dangerous he was. That was not the plan."
In the second half, TCU drew to within one score, 17-10, but a big return on the ensuing kickoff started a quick scoring drive for OSU that put the game out of reach.
"One thing about playing good defense is that you always get everybody's ‘A' effort," Patterson continued. "I didn't see that (OSU) offense against Kansas State. Again, they had two weeks to prepare for us and were able to get some things done. You have to give Coach Gundy and Oklahoma State credit. They're 5-1."
? Adding insult to injury, TCU leaves Stillwater with a banged up roster.
Tight end Dominik Merka is now out for the year with a broken leg. Wide receiver Brandon Carter did not play in the second half with a left arm or shoulder injury. Defensive tackle Davion Pierson left the game early, and quarterback Trevone Boykin missed two second half plays with a shoulder injury.
Boykin finished the game with 188 yards passing on 35 attempts. Catalon finished with 48 yards rushing, and Waymon James carried the ball just five times for 27 yards.
TCU faces Texas next week at Amon G. Carter Stadium.
GARY PATTERSON POST GAME VIDEO: