Stone assisted on Pacioretty's goal at 10:59 of the third period to make it 4-2, drawing a penalty and passing to Pacioretty while falling down, and Pacioretty scored five-hole.
"[Stone] led the way, that's why he's wearing the 'C,'" Golden Knights coach Peter DeBoer said. "He has the ability to raise his level at important times and that's what you want your captain to do in those moments in the game."
Tuch scored an empty-net goal at 19:46 for the 5-2 final.
"I think if you're playing in a normal season, we get up 2-0 like that, the building is rocking," Stone said. "We've got to learn not to put our foot off the gas after going up 2-0 whereas if you're playing at T-Mobile [with fans], sometimes we can finish teams in the first five minutes."