Hart's about 4 runs below average per UZR and DRS. He isn't even close to being a liability, compared to an Adam Dunn or Brad Hawpe types, who made millions in the game. Willingham isn't good enough to play RF, and Cuddyer is far worse, and they each had teams lining up to run them out there. Again, corner OF's don't make their cash playing D, and worrying about a guy slightly below the norm is just being nitpicky.