Article Photos: Oklahoma football: Bob Stoops says defensive tackle Casey Walker to rejoin team Monday 3/3

Oklahoma's Casey Walker (53) brings down Iowa State's Jeff Woody (32) 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 Bryan Terry, The Oklahoman