Article Photos: OU football: Linebacker Dominique Alexander will likely step in with Corey Nelson done for season 99/112

Oklahoma's Chuka Ndulue (98) and Corey Nelson (7) bring down TCU 's Ty Slanina (13) 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