In the championship game, Oklahoma was victorious by a score of 39–27, winning their fourth consecutive and 12th overall Big 12 Conference championship. Texas had won the regular season's Red River Showdown game 48–45. It was the first time the two rivals had played each other in the conference title game.

The 2018 Big 12 Championship Game featured top-seeded Oklahoma against second-seeded Texas.

Sponsored by soft drink brand Dr Pepper, the game is officially known as the Dr Pepper Big 12 Championship Game. The game featured the top-seeded, Oklahoma Sooners and the second-seeded, Baylor Bears. This was the 18th Big 12 Championship Game and determined the 2019 champion of the Big 12 Conference.

The 2019 Big 12 Championship Game was a college football game played on Saturday, December 7, 2019, at AT&T Stadium in Arlington.