If there's one 2008 Steeler draftee who is being counted on more than any other, it's Limas Sweed.Even a year after he was drafted, first-round pick Rashard Mendenhall will be the No. 2 tailback, but even if he fails at the job, Mewelde Moore and Tank Summers are available to step in. Third-round pick Bruce Davis and fourth-round pick Tony Hills will need extremely impressive training camps just to make the gameday roster, fifth-round pick Dennis Dixon is likely the No. 3 quarterback while sixth-round pick Ryan Mundy is battling for a roster spot.
