The Iowa State Cyclones host top-ranked Oklahoma on Saturday in their Big-12 Conference opener. The Cyclones are 2-2 after a loss at Northern Illinois and senior offensive tackle Casey Shelton says the Cyclones will need a nearly flawless effort against the Sooners. The Sooner defense is one of the best in the country and says their defensive front is one of the best,and the rest of the defense is good too along with lots of good reserves. Shelton says there were some positives in last week’s game as they got the running game established.