Article Photos: Oklahoma State football: Clint Chelf ready if called 1/2

OSU COLLEGE FOOTBALL: Defensive players Nigel Nicholas (89), Shamiel Gary (7), and Daytawion Lowe (8) walk onto the field before OSU's first practice of the season on the campus of Oklahoma State University in Stillwater, Okla. on Friday, August 5, 2011. Photo by Zach Gray ORG XMIT: KOD