Arizona led, 1-0, after one period, but the Golden Knights seized control of the game in the second; Vegas scored twice within a span of 10:01. A third Vegas goal scored by Cody Eakin early in the third period was disallowed after Arizona challenged citing off-side.
Derek Stepan scored twice in regulation, including a power-play goal with 6:49 left in the third period off a perfect saucer pass from Alex Galchenyuk that tied the score 2-2. The Coyotes entered the game ranked 30th in the NHL in power-play success (10.3 percent) on home ice.
"We scored a big goal to give our team a chance to win the game," Stepan said. "We've had a lot of discussions about the power play lately and now we can go forward with that."
Tied 2-2, Arizona was awarded another power play with 1:55 left in the third period. This time, Vegas clamped down defensively, won all three face-offs taken and held the Coyotes to just one shot attempt by Dylan Strome, which was blocked.
"I'd like to see us get a chance or two on that other power play at the end," Tocchet said. "I don't know if we were spooked or what. They really played aggressive on us and we had to make that one play to get through the pressure. We just couldn't make that one play."