Oklahoma State football: James Castleman helps Cowboys stuff the run - Article Photos 3/3

COLLEGE FOOTBALL: From left, quarterbacks J.W. Walsh (4), Clint Chelf (10) and Wes Lunt (11) wait for the start of a drill during OSU spring football practice at Boone Pickens Stadium on the campus of Oklahoma State University in Stillwater, Okla., Monday, March 12, 2012. Photo by Nate Billings, The Oklahoman