Despite what appears to be progress in their recoveries, interim head coach Bruce Cassidy termed them both as day-to-day. Carlo, however, was ruled "doubtful" to play in Game 3 on Monday night.

"Going forward is more of a target date," Cassidy said of Carlo. "That's kind of the way we're looking at it."

David Krejci, Torey Krug, and Adam McQuaid also remain day-to-day with injuries. None of them skated on Sunday.

Noel Acciari, meanwhile, did skate Sunday morning and could return to the lineup for Game 3. Cassidy said it "looks like he'll be available" and the team "will have a decision to make" in regards to whether he slots back in on Monday night.

"Noel was playing good hockey when he got hurt," said Cassidy. "There's a good chance he'll draw back into the lineup. But, again, those are all things we'll sort through in the morning."

"It's mostly the back end that is a little more congested back there," added Cassidy. "We'll see how everyone shows up [Monday] and who can take morning skate. If they get through morning skate, we'll go from there."

If none of the Bruins' injured defensemen can return for Game 3, Boston may be forced to make a call-up.

"Right now, we don't know, to be honest," Cassidy said when asked who his sixth blueliner would be Monday night. "We're looking at all of the guys we talked about and if they can't go, we'll look to Providence for a replacement."

Boston has now suffered an injury on the back end in four consecutive games dating back to the regular season. And they have often come early in the game, forcing the five remaining defensemen to take on extra minutes, and perhaps play out of position.

"It's just kind of rotating," said Kevan Miller, who played over 27 minutes in Game 2. "You've got lefties ending up on the right, righties ending up on the left, guys playing with everybody. We just kind of rotate. We've been successful with it. It's a product of the system and we're able to fall back on that.

"It's a challenge, but it's playoff hockey. The energy might be a little bit low, but I think it's more between the ears than anything. It's playoff hockey and everybody is excited to play."

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