Robin Lehner played great and stopped 26 shots for Vegas. But the acclaimed Swedish goalkeeper Jacob Markström did not get much help from his teammates in Vancouver. Already after two periods, Markström had let four pucks pass him in the away goal.

When the American Max Pacioretty increased to 5-0 just over halfway into the third period in the NHL quarterfinals, the Swede - who played big when Vancouver barked and beat the reigning champions St Louis in the quarterfinals - was replaced by Thatcher Demko.

There were no more goals and Vancouver has to think twice before the return meeting on Wednesday night Swedish time.

- We did not play well today. We get to watch the match and see what we can improve. We have to get better with the puck. I have a strong belief in the group, says coach Travis Green at a press conference.

Countryman William Karlsson had an assist to the 3-0 goal in the middle of the second period, signed Mark Stone.

Vancouver star Elias Pettersson went scoreless for the first time in three matches. The 21-year-old has shoveled in points during the playoffs in the North American ice hockey league, but failed to outsmart Lehner in Rogers Place in Edmonton.