Brad Marchand also scored twice, and David Pastrnak had three assists for the Bruins (11-10-3), who were coming off a 2-0 loss to the Vancouver Canucks on Tuesday. Joonas Korpisalo made 21 saves.

“We showed signs last night that we had opportunities,” Boston coach Joe Sacco said. ‘What’s the difference tonight? We just put the puck in the back of the net. I actually thought we played a tighter game defensively last night. We didn’t give up as much as we did tonight, but you’re going to have these games, especially when you’re in a back-to-back situation. You have two teams desperate for points. It certainly wasn’t our cleanest game, but that’s hockey. Sometimes you find ways to win when you’re not at your best, and that’s a good sign for our group.”

Brock Nelson had two goals and an assist, and Maxim Tsyplakov had a goal and an assist for the Islanders (8-10-5), who have lost five of their past six games (1-4-1). Ilya Sorokin made 15 saves.

“I feel like we are playing well. We’re not winning. I’m not stupid, I know that. I know it’s a big part of the equation here,” New York coach Patrick Roy said. “What good is it for us if I always focus only on the result? I mean, it’s the way we play. We don’t give up 40 shots, we give up 21. We don’t give up 22 scoring opportunities, we give up 10-12. So we’re doing a lot of good things. I’d rather focus on those things than say to you, “Oh yeah, we did this bad and so bad.” I’d rather focus on the things we’re good at, and hopefully that will change for us. “But I realize that we make mistakes in important moments that cause goals to be conceded, but this is a team game and I will stick with our boys.”