It looks like a weak year in fantasy Rookie Running Backs.  Who do you think will light it up?  I say no one! I thought Knowshon Moreno would be the elite runner or maybe Beanie Wells.  Unfortunately, they both look injury prone and buried on the depth charts behind proven vets.  Even Donald Brown, who has looked the best out of the elite 3 Rookie Running Backs, is behind Joseph Addai.  So that leaves the rest.  You've got LeSean McCoy, Shonn Greene, Glen Coffee, and a bunch of virtually unknowns.  I like the way the aforementioned mid-level guys have done so far in preseason.  I think they are poised to do just as good as the elite bunch of first rounders.  In my opinion, only Donald Brown stands to be an impact fantasy stud his rookie season.  As far as #2 impact rookie, I'll go out on a limb and pick a dark horse.  How about James Davis from Cleveland.  He was a stud at Clemson and slipped in the draft due to a so-so senior year.  I think he was a steal and he looks great in preseason.  Jamal Lewis is old and running out of gas.  Look for James Davis to be the SOD. i.e.(Steal Of the Draft!) 

P.S. Trust me, Boobie knows his Running Backs!