Article Photos: Oklahoma football: Sooners' defense shines in first half 88/99

Oklahoma's Corey Nelson (7) dives to stop TCU 's Trevone Boykin (2) during the college football game between the University of Oklahoma Sooners (OU) and the Texas Christian University Horned Frogs (TCU) at the Gaylord Family-Oklahoma Memorial Stadium on Saturday, Oct. 5, 2013 in Norman, Okla.   Photo by Chris Landsberger, The Oklahoman