Well, it looks like some real bad news could be coming out of Ottawa (or wherever that arena really is) tonight:

At the beginning of the third, Krejci didn't come back to the bench:

Don't see David Krejci. — Fluto Shinzawa (@GlobeFluto) December 28, 2015

You know it's bad when the Bruins official account mentions it:

No sign of David Krejci on the ice or bench with just over 6 gone in the third period. — Boston Bruins (@NHLBruins) December 28, 2015

And then the bad news:

David Krejci is not likely to return (upper body). ^BB — Boston Bruins (@NHLBruins) December 28, 2015

Looking at the shift-chart, Krejci finished out the second period, and then did not return:

Ryan Spooner has been taking Krejci's place. We'll have more info when we can find it.