Following a boisterous warmup, during which the building was already fuller than it had been all season long, the pregame presentation brought with it plenty of emotion. With the Garden buzzing, the fans erupted when A.J. Quetta - the Bishop Feehan hockey player left paralyzed after an on-ice accident earlier this year - was introduced as the honorary fan banner captain.
"I think 18,000 people or whatever it was helps everyone get going," said Bruins coach Bruce Cassidy. "The magnitude of where we are - the second round - you put that on top of A.J., seeing him doing better, all those things go into it. Every little bit of support for us, once the puck drops, matters."
But before the puck dropped, the Black & Gold faithful made sure to turn up the decibel level once more as they joined Todd Angilly for a raucous rendition of the national anthem that had the building shaking down to its foundation.
"It was really special," said McAvoy. "It's been a while. I was kind of joking around this morning that it's been so long that tonight was going to feel like the first time again and it was awesome. Never seen that many fans there early for warmups. You could tell that they were excited.
"They were into it, they were loud, they were passionate. They were everything that makes Bruins fans so special. Really happy to get the win for them in their first game back and we're going to need them the rest of the way here. They did their job tonight."
As did the Bruins. Feeding off of the frenzied atmosphere, Boston - despite allowing the opening goal and being tied after two periods - carried the play for much of the evening, outshooting the Islanders, 40-22, while generating the vast majority of the contest's scoring chances. The Bruins had 35 (12 high danger) to New York's 11 (2 high danger), per Natural Stat Trick.
"I think we talked about it," said Bergeron, "that we had to be appreciative, that we had to soak it in, but also to play the game and not to worry about it too much, kind of put yourself in a bubble, if you will, and trust your instincts and play hockey. The rest will take care of itself, and the energy will be there from the crowd."