I posted this in the Grandal signing thread (if I remember correctly) but being a Dodgers fan I got to watch Grandal play a lot. While analytics love his defense, the eyes don't. He's slow to react side to side. He's slow to react on balls in front of the plate. He's very much a station to station baserunner.
We as Sox fans might have expectations of the guy based on reputation and analytics, and not by watching him play. Which is fine. If Lightning McCann wasn't on this team, I am sure we'd all love the guy.
Wait until we're int he playoffs and he's the guy in the pressure at-bat. That's when he shines.