Article Photos: Oklahoma football: Why the Sooners' 35-20 victory at Iowa State was a feat of Clay 17/47

Oklahoma's Kenny Stills (4) catches a touchdown pass in front of Iowa State's Cliff Stokes (7) 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. Oklahoma won 35-20. Photo by Bryan Terry, The Oklahoman