Article Photos: Oklahoma football: Why the Sooners' 35-20 victory at Iowa State was a feat of Clay 12/47

Oklahoma's Brennan Clay (24) carries the ball on his way to a touchdown in the third quarter 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. OU won, 35-20. Photo by Nate Billings, The Oklahoman