yeezus
It's OVER 5,000!
Why would his defensive WAR go down? dWAR = runs saved + positional adjustment. The loss of runs saved from moving to center (because of the better quality of defenders) is offset by the addition in his positional adjustment. So his total dWAR would be pretty much the same.
Because his defensive WAR wouldn't get that huge boost by being far and away the best defensive player at his position. I'd think the positional adjustment would bridge the gap some, but it seems if he's not the best by far like he is in RF (because it isn't a focal point for defense like CF is), his WAR would drop.
Let's say he goes from easily being the best defender in RF (where not a lot of great defenders play), where he's getting a big boost in WAR because he's so much better defensively, to being the 6th best CFer (I know there's no set runs saved for #6, or wherever). He wouldn't be getting that big boost in WAR by being the best. Positional adjustment would completely bridge that gap?