Biggest sleeper: Bernard Pierce. This bruising Temple running back was the seventh back selected, and while he won't be pushing for Ray Rice's job during training camp, he will play a large role on this team. Pierce is 6-foot, 220 pounds, but he plays bigger than that. He can contribute right away in short-yardage situations, and given where he was drafted, he looks to be the frontrunner to replace Ricky Williams as the No. 2, change-of-pace back. He is the kind of hard-nosed, physical runner that Ravens fans love and it wouldn't be surprising if he developed into a starting-caliber back someday.