Article Photos: OSU football notebook: Several candidates vying for playing time at defensive end 1/2

COLLEGE FOOTBALL / BOWL GAME: Oklahoma State's Tyler Johnson (40) pulls down Purdue's Robert Marve (9) during the Heart of Dallas Bowl football game between Oklahoma State University (OSU) and Purdue University at the Cotton Bowl in Dallas,  Tuesday,Jan. 1, 2013. Photo by Sarah Phipps, The Oklahoman