Article Photos: Oklahoma football: Aaron Colvin, Sooners defense step up in victory 3/53

OU's Chuka Ndulue (98) and Corey Nelson (7) stop Texas Tech's Kenny Williams (34) during a college football game between the University of Oklahoma (OU) and Texas Tech University at Jones AT&T Stadium in Lubbock, Texas, Saturday, Oct. 6, 2012. Photo by Nate Billings, The Oklahoman