It's probably a pretty easy argument to make that Jose Bautista is already the greatest Blue Jays position player ever, considering how much value he's actually provided in as little time as he has, but in terms of historical value, he's just a few games away from passing Barfield into the all-time top 3:
http://i.imgur.com/H4o4eXm.png
At the rate he's going, it probably won't be long before he climbs to the top of that list, despite having played fewer games than nearly every other guy on there.
Side note, I never noticed how Delgado/Fernandez and Wells/Moseby pretty much provided almost exactly the same amount of WAR in almost exactly the same amount of games.