"I thought today was one of our more complete games on the defensive side of the puck for sure, and I thought we had some real good offensive-zone shifts where we either possessed the puck or pursued the puck, one or the other," Sullivan said.
"For me, that's when our team is at its best. I've always been of the belief that that defense can start 150 or 160 feet from your net, just through puck pursuit, and it takes all five guys to do it. So I thought the guys really played hard tonight. Everyone was invested on both sides of the puck. And fortunately, we got the result."
With the win, the Penguins moved into first place, one point ahead of Washington and four points ahead of the Islanders, who play each other on Tuesday. And that's when Pittsburgh will host Boston again.
They know they have to be prepared for a response as the Bruins are also battling for position. Boston has 60 points while Pittsburgh has 67, but possess two games in hand. But today's performance also gives the Penguins a lot of confidence heading into the rematch, as Sullivan told them before this game that they needed to find a comfort level playing in low-scoring games, because that's the nature of high-stakes hockey.
"Obviously the Bruins are one of the teams that we're fighting for a playoff spot with and against," Dumoulin said. "This game was really important to create a little separation between us. Obviously as the games wind down, they get more and more important, especially with us playing these playoff opponents right now.
"It makes Tuesday's game even more important to create even more separation, and obviously right now, we're fighting for the top spot in our conference. So all these games matter and all these games are really important going down the wire."