Article Photos: OU football: Big win over La. Tech gave walk-on linebacker Caleb Gastelum a night he won't forget 57/63

Oklahoma Sooner Caleb Gastelum (45) deflects a pass intended for Kenneth Dixon during a college football game between the University of Oklahoma Sooners (OU) and the Louisiana Tech Bulldogs at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., on Saturday, Aug. 30, 2014. Photo by Steve Sisney, The Oklahoman