Mat Boesen, second on the Frogs in sacks with five, was ejected in the second quarter for kicking an Oklahoma defender. TCU could not mount a consistent pass rush against Baker Mayfield.
Over their previous four games going into Saturday, the Frogs had given up just 6.8 points a game. Oklahoma scored 17 in the first quarter.
Other notes from the first half:
-- Baker Mayfield continued to make his last and best Heisman case. Going into the game, his 201.6 pass efficiency rating led the nation. In the first half alone, he piled up 38 points and was 15 of 21 for 299 yards and three touchdowns.