Thirteen seconds later, Guentzel tied it 3-3 at 18:06 after taking a feed from Malkin, who was behind the net.
"I think [there were] a couple of defensive breakdowns that they made us pay for," Pittsburgh forward Teddy Blueger said. "Obviously, momentum swings quick and things change, so after we gave up the first one, we have to do a better job of putting that behind us and not letting the momentum shifts affect us as much. But obviously 'Guentzy' scored a big goal for us and got us right into it, and we were still in a pretty good spot going into the third."
Ryan Lindgren scored an empty-net goal for the 5-3 final with 16 seconds left in the third. The defenseman was plus-1 with three shots on goal and two blocked shots in 19:34 of ice time after missing three games with a lower-body injury.
"That's what he is. He's a character guy," Rangers coach Gerard Gallant said. "He plays hurt, he plays all the time. I don't know how many minutes he played tonight, but it seemed like he was on the ice all night. Just one of those guys that makes everyone around him better."
Guentzel gave the Penguins a 1-0 lead at 9:32 of the first period, taking three shots in succession before banking one in off Shesterkin's skate from below the goal line.