Article Photos: Oklahoma football: Corey Nelson says improved defensive line will help linebackers 1/1

Oklahoma's Corey Nelson (7) tries to get Kansas State's Collin Klein (7) during the college football game between the University of Oklahoma Sooners (OU) and the Kansas State University Wildcats (KSU) at the Gaylord Family-Oklahoma Memorial Stadium on Saturday, Sept. 22, 2012, in Norman, Okla. Photo by Chris Landsberger, The Oklahoman