"I knew pretty early," Nash said of his decision to shoot rather than make a move on Niemi. "Just from watching Chris Kreider on his breakaway. [I] saw [Niemi] was kind of cheating the deke and thought I could catch him with a quick shot and kind of catch him off guard."
It was Nash's 12th goal of the season, and the Rangers' fifth shorthanded goal of the campaign.
Mats Zuccarello would add a shorthanded goal with 1:04 remaining to ice the game.
Lundqvist's return to the lineup after a four-game absence did not begin as planned after he was blindsided behind the net by Cody Eakin 9:19 into the first period, leaving the goaltender helmetless and forcing him out of the game for 5:31 of action.
"I didn't see him coming at all," Lundqvist said. "When I went down, I think first you just check if everything is the way it should be. Neck, shoulder was a little sore. [Trainer Jim Ramsay] came out and told me you have to leave right away, so I got off."
Head coach Alain VIgneault said he hoped the NHL penalizes Eakin accordingly.
"The League better do something about that hit," he said. "It's everything you want to take away from the game: a hit to the head, a forward motion and it's a goaltender on top [of it]. If that happens in the playoffs and your goaltender has to go out of the net - they better do something about that and take care of business."
Lundqvist would return, though, and turned in one of the better performances of the season. After making just six saves in the first period, Lundqvist was peppered with 18 shots in the second period, including four saves late in the period with the Rangers on the penalty kill.
"Special teams was the difference again," Lundqvist said. "The way we killed a lot of penalties tonight. It won us the game tonight, and obviously the game winner was on our PK. It's so important to have confidence when you go down a man and the last couple games we've been doing a great job with reads and blocking shots and putting pressure on."