Article Photos: Oklahoma football: Sooners' secondary shaky without Aaron Colvin, Gabe Lynn 32/99

Tulsa's Trey Watts (22) is brought down by Oklahoma's Eric Striker (19) during a college football game between the University of Oklahoma Sooners (OU) and the Tulsa Golden Hurricane at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., on Saturday, Sept. 14, 2013. Oklahoma won 51-20. Photo by Bryan Terry, The Oklahoman