Article Photos: OU defense steps up in 26-6 win over Iowa State 10/59

Oklahoma's Aaron Colvin (14) recovers  a fumble by Iowa State's James White (8) during a college football game between the University of Oklahoma Sooners (OU) and the Iowa State University Cyclones (ISU) at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., Saturday, Nov. 26, 2011. Photo by Steve Sinsey, The Oklahoman