Article Photos: Oklahoma football notebook: Lane Johnson, Bronson Irwin provide latest O-line scares 37/47

Oklahoma's Landry Jones (12) hands the ball to Brennan Clay (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 Nate Billings, The Oklahoman