LAS VEGAS -- The wins and the records keep on coming for the Vegas Golden Knights.

William Karlsson slapped in a Reilly Smith pass with 23.8 seconds left in overtime to give Vegas a 3-2 victory over the St. Louis Blues before a sellout crowd of 17,883 at T-Mobile Arena on Saturday night.

Smith and Colin Miller also scored for the Golden Knights (6-1-0), who became the first team in NHL history to win six of their first seven games in their inaugural season.

"It feels good obviously," Karlsson said. "It's always fun to win. I haven't really thought about the records right now. We come to the rink, have fun, work hard and it's the same when we play the games.

"So far, so good."

Goaltender Malcolm Subban had 37 saves for Vegas but gave way to Oscar Dansk with 9:10 remaining in regulation after suffering a lower-body injury while doing the splits. Dansk, recalled Oct. 19 from the Chicago Wolves of the AHL, made his NHL debut and stopped 10 of the 11 shots he faced.

"Obviously it (stinks) that Malcolm went down," said Dansk, who called the win the biggest thrill of his hockey career. "He's been playing unreal and I'm hoping that he recovers quickly. A lot of things, a million things actually, were going through my mind. I just tried to focus on the next puck and the next save I had to make."

Magnus Paajarvi and Alex Pietrangelo scored for St. Louis (6-2-1), which had a two-game winning streak snapped. Jake Allen had 19 saves in goal for the Blues.

St. Louis, playing its third game in four nights, dominated the first period, finishing with an 18-4 edge in shots but with just a 1-0 lead thanks to Subban, who stopped a handful of close-in shots, including a breakaway by Brayden Schenn.

The Blues' only goal came on a rebound by Paajarvi after Subban stopped a wraparound attempt by center Oskar Sundqvist.

Smith tied it at the 13:54 mark of the second period when he slapped in a rebound on a power play from the top of the left circle past Allen while Scottie Upshall was a serving a tripping penalty.

The Golden Knights, who had been only 2-of-27 on the power play this season before Smith's goal, converted their second straight power play 3 1/2 minutes later when Miller wristed a shot over Allen's left shoulder to put Vegas in front 2-1.

St. Louis appeared to tie it early in the third period when center Vladimir Sobotka wristed a shot between Subban's pads and the Vegas goalie slid into the net. But after a lengthy video review, officials were unable to determine if the puck crossed the goal line and the referee's initial call of no goal stood.

"I knew after watching them call no goal on the ice that it wouldn't go our way," St. Louis coach Mike Yeo said. "Obviously you hope the ref sees that and makes the call that it's a goal on the ice. You can't see where the puck is. I know the rule. You can't just use common sense and think it's in the net. They have to see it. The call on the ice was what hurt."

Three minutes after Subban departed, Pietrangelo tied it at 2-2 with his third goal of the season, slapping in a pass from Jaden Schwartz from the top of the left circle.

"We had some really good looks, we just couldn't find a way to get the rebounds in," Pietrangelo said. "I think when you have (49) shots you've got to find a way to score more than two goals."

Dansk made a pair of big saves on Schwartz, including one of the edge of the crease with six seconds left in regulation. That set the stage for Karlsson's game-winner.

"I saw a little scrum along the boards and got myself down the ice so we could have a two-on-one," he said. "(Smith) made a great pass and I just slapped it in."

NOTES: Vegas G Malcolm Subban was making his third consecutive start in goal in place of injured starter Marc-Andre Fleury, who remains on injured reserve after suffering a concussion in a 6-3 loss to Detroit on Oct. 13. ... The 49 shots were the most in a game by the Blues since March 19, 2016 at Vancouver. ... D Alex Pietrangelo's goal was the 68th of his career and moved him into fourth place on the Blues' all-time franchise list for defensemen. ... The Golden Knights continue their seven-game homestand Tuesday versus Chicago. ... St. Louis returns home to face Calgary on Wednesday.