Article Photos: Oklahoma football: After three strong quarters, Sooner defense faltered when it most mattered 70/95

Oklahoma's Aaron Colvin (14) battles Kansas State's Chris Harper (3) for the ball 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