There's no question now - I think the biggest thing that everyone's looking at Toronto is Matthews. And he's missed time this year. Of course, he went overseas, went to Germany to get looked at.
He missed that one game during the 4 Nations... You can sense that Matthews, as captain - this is my guess - whatever he's dealing with, he wants to show that he can push his way through it, or deal with it as best he can while he's in the lineup.
I think he sees it as leadership by example, push his way through. But it's clear that he's bothered by something and wants to attack it the way he feels a captain should, which is to play his way through it.