Article Photos: Oklahoma football: Increased mobility of Sooners' quarterbacks on full display at OU's spring game 22/59

Sterling Shepard (3) launches a pass after an end around reverse on offense during the annual Spring Football Game at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., on Saturday, April 13, 2013. the pass was icomplete.  Photo by Steve Sisney, The Oklahoman