Bedlam Series

The Bedlam Series is the name given to the Oklahoma–Oklahoma State rivalry. It refers to the athletics rivalry between the Oklahoma State University Cowboys and Cowgirls of the Big 12 Conference and the University of Oklahoma Sooners of the Southeastern Conference (SEC). Both schools were also members of the Big Eight Conference before the formation of the Big 12 Conference in 1996, and both were divisional rivals in the Big 12 South Division prior to 2011. Since Bedlam began in 1900, 40 years of the rivalry's games were played without the teams playing in the same conference. The rivalry concluded as an annual conference matchup for football following the 2023–24 NCAA Division I FBS season, after which Oklahoma joined the SEC; while scheduling issues preclude the resumption of the Bedlam Series for football until the 2031 season, the Series will continue for basketball as a non-conference game for the 2024–25 season.