Actually, I think he could play in the NL. Looking at things like Win Shares (admittedly not a great stat for defense) he's about the same as a Carlos Lee, better than Manny, a little worse than Dunn (better according to BP). Better than replacement level, below average. Probabilistic model of range has him as better than guys like Crawford, Payton, Swisher, Podsednik, Burrell, etc. He's not that terrible.