Last season, Oklahoma beat Oklahoma State and Baylor beat Texas on Dec. 7.
Bedlam is one of three Big 12 games scheduled for Dec. 6 this season; Iowa State will host TCU, and Baylor will be at Kansas State.
OU’s game at Iowa State was listed on the original schedule as being either Thursday, Oct. 30, or Saturday, Nov. 1.
Oklahoma has played just one non-Saturday conference game in the Big 12 era. Last season, the Sooners lost at Baylor on Thursday, Nov. 7.
The two games were the only question marks on the Big 12 schedule when it was released in early November.
Another conference game, also involving the Sooners, has been adjusted since, with Oklahoma’s game at West Virginia shifted up a week to Sept. 27.
The Sooners open the season Aug. 30 against Louisiana Tech in Norman.
They start the Big 12 schedule with three consecutive games away from Norman, at West Virginia on Sept. 27, at TCU on Oct. 4 and against Texas in Dallas on Oct. 11.