Pairing Antonio Cromartie with All-Pro cornerback Patrick Peterson will keep offensive coordinators up at night -- that is, if Cromartie returns to his 2012 form. Even if the duo is operating at a high level, the safety spots have some real question marks. Tyrann Mathieu had a solid rookie season, but he's coming off ACL and LCL tears in his left knee. Even when he does return, the defensive playmaker lines up underneath in their sub packages, so there's a need for a ball hawk to play over the top. Alabama's Ha Ha Clinton-Dix or Louisville's Calvin Pryor would be great pickups if either falls to No. 20 overall, but the Cards could wait to address the position in Round 2 with a player like Deone Bucannon. The Washington State defender has size (6-foot-1), toughness and a history of production in the Pac 12 -- just watch his tape. I think Jimmie Ward from Northern Illinois is a great player, too, but he doesn't have the size (5-foot-11) they're looking for; teaming him with Mathieu would leave Arizona with two undersized safeties.