Article Photos: Second-half performance can be building block for Cowboy defense 24/57

Texas Tech quarterback Graham Harrell (6) walks the sideline after Oklahoma State took over on downs late in the fourth quarter during the second half of the college football game between the Oklahoma State University Cowboys (OSU) and the Texas Tech University Red Raiders (TTU) at Boone Pickens Stadium  on Saturday, Sept. 22, 2007, in Stillwater, Okla. 

By CHRIS LANDSBERGER, The Oklahoman