Article Photos: OU vs. Texas: Red River series has become a measuring stick for Bob Stoops, Mack Brown 4/5

Texas head coach Mack Brown gives the Hook 'em Horns to fans as the Longhorns arrive at the stadium before the Red River Rivalry college football game between the University of Oklahoma Sooners (OU) and the University of Texas Longhorns (UT) at the Cotton Bowl in Dallas, Saturday, Oct. 8, 2011. Photo by Nate Billings, The Oklahoman  ORG XMIT: KOD