Article Photos: Second-half performance can be building block for Cowboy defense 13/57

OSU's Brandon Pettigrew (87) stiff arms Jamar Wall (3) Texas Tech on his way to a touchdown in the fourth quarter of the college football game between the Oklahoma State University Cowboys (OSU) and the Texas Tech University Red Raiders (TTU) at Boone Pickens Stadium in Stillwater, Okla., on Saturday, Sept. 22, 2007. OSU won, 49-45. By NATE BILLINGS, The Oklahoman