Article Photos: Oklahoma football: Why the Sooners' 35-20 victory at Iowa State was a feat of Clay 32/47

Iowa State's Durrell Givens (24) tackles Oklahoma's Jalen Saunders (18) after a catch 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