http://www.grantland.com/story/_/id/...eri-nl-central

Lots of interesting stuff here, but this quote stuck out to me:

"Center field could be considerably uglier, with Choo a virtual lock to be one of the league's worst at that position"

Granted, you shouldn't take spring training performance to be a reliable indicator of what will happen during the season, but nothing we've seen from Choo would suggest he's going be that awful.