Very happy indeed they only have to block Weber's.
I don't understand what PK brings that Weber, Doughty and AP don't already bring as RH shots, big minutes and superior 200ft games. (The 'seniority' factor is a myth, as AP is Subban's age.)
It's the left side that needs a bit more depth, so that's why the extra should be a lefty. Keith can play 30mins a game, but he shouldn't
have to.
I think the only way Subban draws in is if Weber looks outmatched speed-wise on the bigger ice, which might not be the case because of his enourmous reach, or if AP somehow falters here in the spotlight. Doubtful.
Despite all this, Norway and Austria are games in which Babcock will see what the extras have to offer.
edit: One major factor in Subban's likely scratching is fairly simple: He takes more penalties than any other Team Canada defenseman. In this tournament, penalties, or rather, not taking them, will be key. Only Doughty comes close, but I doubt Subban replaces him. We'll see.