Article Photos: OSU football: A true freshman starting QB would be rare but not unprecedented 1/3

Blake Jackson (18) stands on the sideline 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 <strong>NATE BILLINGS</strong>