Sergei Gonchar, Jamie Benn and Rich Peverley had Dallas' goals, and Lehtonen also had an assist for the second consecutive game. The Stars have won their last three games by a combined 14-1 margin.
Gonchar had a power-play goal, his second score this season, with just under 5 minutes remaining in the first period against his former team. Dallas has scored with a man advantage in seven consecutive games.
Alex Goligoski, another former Penguins player, had an assist when Benn scored to make it 2-0 at 3:14 of the second. Peverley closed the scoring a little more than 7 minutes later.
Lehtonen faced only 12 shots during the first two periods, before the Metropolitan Division-leading Penguins doubled their attempts in the third.
You can be hyped all you want, but his game will speak for itself. He's obviously going to be a great player so we've got to make sure we keep an eye on him. Whether it's his first game or his 1,000th game, our job is to take care of business, shut him down.
— Blues defenseman Alex Pietrangelo on facing ballyhooed Oilers rookie Connor McDavid, who is making NHL debut in St. Louis
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