How quick is Mertesacker? I remember a ton of people making fun of that signing as well. Seems like he's got on pretty well with good positioning, a good football brain, and a mobile partner. Obviously, not saying Fazio is as good as him (or he might me, I have no clue), but a big old unit with good positioning seems like a good foil to the athletic Vertonghen. Maybe even better than Musachio was.