I consider potential as players who have the ability to do great things.  The Pirates do have some.  As you mentioned, Jason Bay, Jack Wilson, and Zach Duke.  But they also have Brad Eldred at first, Ryan Doumit behind the plate, Chris Duffy in the outfield, and pitcher Paul Maholm.  It will just take time for these rookies to get it all together, but the potential for the future is there.