It remains to be seen whether or not defenseman Matt Grzelcyk will be medically cleared to play tomorrow night, but there's a larger question: do you even play him if he gets cleared?
On the surface, it seems like a slam dunk: yes, you play him.
Grzelcyk is a good, mobile defenseman whose skating can help the Bruins with the Blues' aggressive forecheck.
He can chip in with a little offense from the blue line as well, which is never a bad thing in a winner-take-all Game 7.
Still, the Bruins should exercise caution, both for their own sake and for Grzelcyk's.