This has been a season-long issue for the Bruins. Krug injured his ankle in a preseason game and did not debut until Oct. 30. Carlo has missed the past eight games with a shoulder/collarbone injury but could return against the New York Islanders at TD Garden on Thursday (7 p.m. ET; SN1, SNE, SNO, SNP, NESN, MSG+, NHL.TV). McAvoy (Oct. 18) and Vaakanainen (Oct. 23) each sustained a concussion.
And it's not just this season. Boston also went through this in 2016-2017, losing Krug, Carlo, Colin Miller and Adam McQuaid over the course of a six-game loss to the Ottawa Senators in the Eastern Conference First Round, though even that seems to pale compared to the current woes.
"I think that shock factor was there a few years ago, like holy smokes, we're missing a lot of guys that play in key situations, who's going to step up? Who's going to do what?" Krug said. "Now that immediate knee-jerk reaction of the guy going down is, it's not such a drastic fall."
They know what they have to do. They've done it before.
"I thought we've handled it well," Cassidy said. "If you look at just the raw numbers, goals against, I think last year we were generally in the top five. This year we're still in the top five."
Cassidy said that ranking is significantly affected by Boston's goaltending, with both Tuukka Rask and Jaroslav Halak playing well, especially of late; they've combined to allow 12 goals in the past six games. Still, it's extremely impressive that the Bruins have allowed the second-fewest goals per game in the NHL at 2.46, behind the Nashville Predators (2.40).
That is partly because the defensemen have simplified their games, a necessity when the few "veterans" (Krug, Moore, Grzelcyk) are playing consistently with rookies. It's also about being adaptable, with pairs changing almost daily.
"If we didn't handle it well, we'd be on the outside looking in," Cassidy said. "Right now we're still in a -- not a great spot, but a good spot, considering everything."
And somehow, they're still having fun.