Article Photos: Oklahoma football: Sooners bring big-play ability into an even bigger matchup with Notre Dame 26/81

Casey Walker (53) is congratulated on his fumble recovery and return during the college football game between the University of Oklahoma Sooners (OU) and the University of Kansas Jayhawks (KU) at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., on Saturday, Oct. 20, 2012. Photo by Steve Sisney, The Oklahoman