Paul Lo Duca -- Lo Duca returns after spending 2009 out of baseball entirely. He should be as healthy as he's going to get but I'm not sure a full year away at the age of 38 does much good. The Rockies see him as insurance at catcher (check) first base (check) and outfield ( ). Not quite comfortable checking off on that one. It's also known he won't accept a minor league assignment.
Jordan Pacheco -- Pacheco is invited as a catcher but can play all around the infield as well. Not a lot of power here, but has a .303 average with a .375 OBP is three minor league seasons. Those are encouraging numbers that make him at least worth monitoring.