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I've decided this group of five guys together onto one slide. Since they may or may not make the roster, I figure going into too much depth won't be relevant until later in training camp.
Onterrio McCalebb, RB, Auburn: McCalebb wasn't actually a draft selection, but he was an undrafted free agent, so he is worth mentioning. He wasn't quite the star Michael Dyer was at Auburn, but there's plenty of potential for a running back with speed. If he makes the roster, he could see 20-30 carries.
Rex Burkhead, RB, Nebraska: Burkhead stood out at Nebraska during the 2011 season, accumulating over 1,300 yards and 15 touchdowns. He struggled with injuries in 2012, but should he be on the team come September, I could see him coming out of the backfield to make a few catches on third down.
Cobi Hamilton, WR, Arkansas: Catching passes from Tyler Wilson at Arkansas proved to be a good thing for Hamilton, as he gathered in 90 passes in 2012, but only found the end zone five times. He's a powerful receiver as opposed to a quick one, so there's potential for him to find the fifth or sixth slot on the receiving corps.
Reid Fragel (OT, Ohio State) and T.J. Johnson (C, South Carolina): As offensive linemen, it's hard to peg both of these guys, especially considering they were compensatory selections. Look for them to be backups if they make the squad.