Article Photos: Oklahoma football notebook: Lane Johnson, Bronson Irwin provide latest O-line scares 10/47

Oklahoma's Sterling Shepard (3) and Oklahoma's Justin Brown (19) celebrate after a touchdown 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