Article Photos: Oklahoma football notebook: Lane Johnson, Bronson Irwin provide latest O-line scares 11/47

Oklahoma's Jalen Saunders (18) tries to get past Iowa State's Durrell Givens (24)  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 Bryan Terry, The Oklahoman