Analysis: The Cowboys could trade back here because most of the defensive players they are holding out for are still on the board -- Fletcher Cox, Michael Brockers, Courtney Upshaw and maybe Dre Kirkpatrick. They need a defensive end in the worst way. Cox visited, Brockers didn't. I don't feel as if they really like Upshaw at 14, and Kirkpatrick would have a better shot if they hadn't signed Brandon Carr. No DeCastro means that this is going to be a choice between Barron, Cox and Brockers. They grab the safety now and work on the defensive ends in the second or third rounds.