I'm not sure, but I remember reading somewhere that his advanced defensive stats weren't good. The perception that he's a good defender was due to his block numbers.
Also, shoot me if we get Rudy Gay. Scratch that. Ask Rudy Gay to try to shoot me.
I like seeing these guys that were always in Paul Pierce trades like eight years ago having nondescript careers while he's aged so successfully. Specifically remember Rudy Gay, Caron Butler, Corey Maggette and Kirk Hinrich.