The game was over from the start as Boston never stopped putting shots on net, ending game one with a favored score of 6-2.
Vegas coach Gerard Gallant didn't rip his team for the effort but said they need to be better prepared.
No matter how well Vegas played through the first five games of the playoffs, the Sharks were great in five of their first six, and they realized Game 2 counted just as much as the series opener.
Tomas Hertl, Evander Kane and Timo Meier each scored goals for San Jose. "That's game-over there. That's what the playoffs are about, big players making big plays".
The Sharks opened as minus-148 favorites (wager $148 to win $100); the total is at 5.5 goals, according to sportsbooks monitored by OddsShark. Without the offensive explosion in the second period, Vegas does not win. That bodes well for Rask, a goaltender who can get on a hot streak and run with it, taking his team with him.
The series shifts back to Vegas on Wednesday night for Game 4, with the Golden Knights looking to continue their incredible inaugural season. His patience was rewarded as he was able to get the tying goal by Fleury. But they kept their cool, drew two penalties, scored two power-play goals and gained momentum.
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Even with the Sharks outshooting the Golden Knights 16-8 Vegas came storming back like a summer dust storm tallying three goals to grab a two goal lead with three unanswered goals.
The Knights then scored through Colin Miller, Jonathan Marchessault and Reilly Smith to put the expansion side 3-1 up.
Vegas went 1-0-1 at the Shark Tank during the regular season. Exactly one month before Monday's victor, Karlsson did this to the Sharks goaltender. Andrei Vasilevskiy made 18 saves.
This one stops a streaking Tomas Hertl in the first period to keep the game scoreless. Charlie McAvoy and Torey Krug scored for the Bruins.
Vegas Golden Knights goaltender Marc-Andre Fleury (29) dives for the puck as defenseman Brayden McNabb (3) look on during the second period in Game 3 of an NHL hockey second-round playoff series at the SAP Center in San Jose, Calif, Monday, April 30, 2018.
For the third time in the Stanley Cup playoffs, the Vegas Golden Knights needed overtime to decide the victor. But the Sharks' penalty-kill unit stood its ground, limiting the Golden Knights to one shot on goal while recording two blocked shots. The Sharks have made consistent playoff appearances in recent history, but it seems a new fire has been lit under the team, a fire that ignites in overtime. Dave Lowry (seven games) and Jason Woolley (five games) did it with the Florida Panthers in 1996. In the first five days of the second round, no team has won consecutive games in a series.
NOTES: Sharks F Joonas Donskoi (lower body) sat out. The team that blew the lead has come out on top in three of those games, with Nashville doing it to Winnipeg in Game 2 of their second-round series on Sunday night and Columbus doing it to Washington in Game 2 of their first-round series.