Article Photos: Oklahoma football notebook: Why Texas didn't kick the final extra point against OU 104/128

OU's Casey Walker (53) brings down UT's David Ash (14) during the Red River Rivalry college football game between the University of Oklahoma (OU) and the University of Texas (UT) at the Cotton Bowl in Dallas, Saturday, Oct. 13, 2012. Oklahoma won 63-21. Photo by Bryan Terry, The Oklahoman