Article Photos: Oklahoma football notebook: Lane Johnson, Bronson Irwin provide latest O-line scares 2/47

Iowa State's Durrell Givens (24) reacts after the Cyclones intercepted a pass in the second quarter during a college football game between the University of Oklahoma (OU) and Iowa State University (ISU) at Jack Trice Stadium in Ames, Iowa, Saturday, Nov. 3, 2012. Photo by Nate Billings, The Oklahoman