McNabb cut it to 2-1 at 10:40 with a wrist shot from behind the right circle after Chandler Stephenson won the face-off draw.
“We dug ourselves a hole that we were able to climb ourselves out of, but I do use a lot of energy to get out of there,” Vegas captain Mark Stone said. “Goalie, obviously, kept us in the game for the first 35 minutes, until we got the 2-1 goal. We’re playing a good team, hard to beat the best team in our conference three games in a row.
“So, regroup, we're off, make a few changes. But for the majority of the game, it was just the start that kind of cost us.”
Jack Eichel tied it 2-2 with a short-handed goal at 13:50 on a 2-on-1.
“They had a level of urgency that we weren't able to match. Sometimes that happens,” Vegas coach Bruce Cassidy said. “At some point you've got to get to your game. It just took us too long. Now, having said that, we weather it because of Logan.
“He gave us every chance to get back in the game, and we did so once it was 2-2, then it was a little bit different, but they executed better than we did. You see it in overtime. They had more jump, more urgency. We didn't have that level we needed tonight to win a playoff hockey game.”
NOTES: Johnston (20 years, 349 days) became the youngest player in Stars/Minnesota North Stars history to score an overtime goal in the playoffs, surpassing the mark set by Steve Ott (21 years, 237 days) in Game 3 of the 2004 Western Conference Quarterfinals. … Thompson tied Marc-Andre Fleury (Game 7 of the 2019 first round; Game 2 of the 2018 second round) for the most saves by a Golden Knights goaltender in a playoff game.