Article Photos: Oklahoma football: After three strong quarters, Sooner defense faltered when it most mattered 75/95

Oklahoma's Kenny Stills (4) and Justin Brown (19) bring down Kansas State's Ty Zimmerman (12) after an interception during the college football game between the University of Oklahoma Sooners (OU) and the Kansas State University Wildcats (KSU) at the Gaylord Family-Memorial Stadium on Saturday, Sept. 22, 2012, in Norman, Okla. Photo by Chris Landsberger, The Oklahoman