Guentzel couldn't put in the rebound of a Crosby miss on a breakaway in the first period, but he was able to tie it 1-1 at 5:56 of the second. Jan Rutta's shot rebounded below the left circle to Crosby, who fed Guentzel along the goal line.
"That's what `Guentzy' does, and it's fun to watch," Zucker said. "That was a big momentum shift for us after they got the first one, and to come back and get those two big ones was nice for him."
The goal was Guentzel's first since Dec. 15, ending an eight-game drought.
"It's a funny game, they come in bunches sometimes," Guentzel said.
Guentzel then gave the Penguins a 2-1 lead at 9:11 with a goal from nearly the same spot. Bryan Rust's pass from the slot found Guentzel, who hesitated momentarily before shooting from a bad angle as Vejmelka scrambled to recover.
"Jake's been fighting it a little bit, but we believe in him and he's a great goal-scorer," Sullivan said. "We felt it was a matter of time. He puts a lot of pressure on himself to score and when he doesn't, he feels it more than anybody."
Pittsburgh had a chance to extend the lead but couldn't score during a four-minute power play in the second. The Penguins, who finished 0-for-6 with the man-advantage, also couldn't score during a 5-on-3 power play which lasted 33 seconds late in the period.
"We defended really well against a team that's tough to play against," Arizona coach Andre Tourigny said. "We were really, really solid against elite players, but we just could not score. We had breakaways, good looks from the slot, rebounds. We just couldn't find a way to get a big goal."