Hall, playing his second game with the Bruins after he was acquired in a trade with the Buffalo Sabres on Monday, gave Boston a 3-1 lead at 1:52 of the third period.
"I mean you always want to contribute," Hall said. "As an offensive guy, you don't come into every game hoping to score a goal, but you want to make plays, you want to create chances, and I thought tonight our line (with David Krejci, Craig Smith) did that. So it was nice to see one go in.
"But we have such a heavy schedule now, you've got to kind of drop games after their done and focus on the next one."
Rask returned from an upper-body injury and made 22 saves in his first start since March 25, and Brad Marchand scored two goals for the Bruins (23-12-6), who defeated the Islanders for the first time this season (1-3-2).
"Well I think I've been fortunate enough to play on a really good team throughout my career, so that helps a lot," Rask said. "We've had some great defenses throughout the years and [I'm] just happy to be part of that. Super grateful that I've been able to play so many years.
"But it's a great milestone. It's one of those that once you're done playing hockey and years after that, you think about your career and what you accomplished and it's probably going to be a nice memory."