In their pursuit of a playoff spot, the Stars are probably going to have a few extraordinary nights.

Saturday was one of those.

The Stars got two goals from rookie forward Colton Sceviour, received a stand-up performance from goalie Kari Lehtonen on the second night of a back-to-back and became the first team to win in regulation in St. Louis in two months. Dallas took a 4-2 victory at Scottrade Center, maybe the toughest place to play in the NHL.

The Stars dropped the Blues to 26-6-4 at home by taking their second win in St. Louis in the last two weeks. With Phoenix’s 3-1 loss to Minnesota on Saturday, the Stars trail Phoenix by one point in the race for the second wild-card playoff spot in the Western Conference. And the Stars have a game in hand.

Dallas moved to 36-27-11 (83 points) with eight games remaining in the season.

“It really was like a playoff game,’’ veteran center Vernon Fiddler said. “There was a lot of emotion, and that’s how we approached it in the dressing room. We want to get engaged and get engaged early.’’

Dallas battled through some physical tussles and didn’t back down. The Stars also drove the net with furious intent, and that resulted in a ton of pressure on Blues goalie Ryan Miller.

“It seems that every time we gave up a goal, we were able to counter and score, and that was huge for us,’’ Sceviour said. “[His two goals] weren’t the prettiest goals, but it was just going to the net.”

Sceviour gave the Stars a two-goal lead when he scored his sixth and seventh goals of the season. The longtime Stars farmhand has played just 18 games this season since a call-up from the AHL, but he has been adding depth scoring.

In fact, the last two games have been all about depth scoring. Cody Eakin and Antoine Roussel added the other goals, while Tyler Seguin saw an end to his 11-game scoring streak. Seguin battled some soreness, but he played 20 minutes and was fine, coach Lindy Ruff said.

“He was sore, that’s all,’’ Ruff said.

And that’s just one more thing the Stars were able to overcome.

In net, Lehtonen was spectacular at times. He stopped 33 shots and has played both ends of back-to-back games twice in the 11 days since he returned from a concussion.

“I felt good,” Lehtonen said. “That was a good feeling. “

It was also a good feeling to win in the home of the Blues, the West’s No. 1 team and a possible first-round playoff opponent for the Stars. And while the Stars will carry a certain amount of confidence, they know they have some work to do.