The Vegas Golden Knights know the importance of keeping their composure heading into Game 4 of the Western Conference First Round against the San Jose Sharks.

It worked to the Golden Knights' benefit in Game 3 on Sunday, when a 6-3 victory gave them the lead in the best-of-7 series. Game 4 is at T-Mobile Arena on Tuesday (10:30 p.m. ET; NBCSN, SN360, TVAS2, ATTSN-RM, NBCSCA).

"It's the playoffs, and that seems to always be the story," Golden Knights forward Max Pacioretty said Monday. "People will always be upset one way or the other. I thought we've done a pretty good job [keeping our composure]."

The Golden Knights won Game 3 thanks to the play of their top line of Mark Stone (three goals, two assists), Paul Stastny (two goals, three assists) and Pacioretty (one goal, one assist).

Vegas also stayed out of the penalty box, something they couldn't do in a 5-3 win in Game 2 on Friday, when they gave the Sharks eight power plays. San Jose went 1-for-3 on the power play in Game 3, while Vegas was 2-for-6.

Sharks center Joe Thornton committed one of those penalties; an illegal check to the head of Vegas forward Tomas Nosek at 16:54 of the second period. He had a with the NHL Department of Player Safety on Monday.