FILE - In this Nov. 16, 2013, file photo, Pittsburgh defensive lineman Aaron Donald (97) in action in an NCAA football game between Pittsburgh and North Carolina in Pittsburgh. Donald is a top prospect in the upcoming NFL draft. (AP Photo/Keith Srakocic, File)
North Squad defensive tackle Aaron Donald of Pittsburgh (97), left, drills against offensive guard Cyril Richardson of Baylor (68) during Senior Bowl practice at Ladd-Peebles Stadium, Monday, Jan. 20, 2014, in Mobile, Ala. (AP Photo/G.M. Andrews)