Article Photos: OU football: Linebacker Dominique Alexander will likely step in with Corey Nelson done for season 90/112

Oklahoma's Zack Sanchez (15) reacts after a stop 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