Article Photos: Oklahoma football: Increased mobility of Sooners' quarterbacks on full display at OU's spring game 27/59

Trevor Knight chases a fumble through the legs of Chuka Ndulue (98) during the annual Spring Football Game at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., on Saturday, April 13, 2013. The fumble was picked up by Frank Shannon (20) and carried in for a score.  Photo by Steve Sisney, The Oklahoman