The Blues rallied from 2-0 deficit in the third period to defeat the Montreal Canadiens Tuesday night on Jaden Schwartz's overtime goal. (Bill Greenblatt/UPI)

By Rob Rains

The Blues trailed the Montreal Canadiens, the best team in the NHL so far this season, 2-0 going into the third period Tuesday night at Scottrade Center but still had confidence that the game was not over.

“We just needed to regroup,” said Jaden Schwartz. “The first two periods didn’t go our way but we knew we had a chance.”

A goal by Paul Stastny 7:40 into the final period brought the Blues within 2-1, and Stastny then set up Schwartz for the tying goal at 10:31. The game went to overtime, where Schwartz scored his second goal of the night 3:38 into the extra session to complete the Blues’ 3-2 comeback win.

“They might have had a couple of tired guys out and (Alexander) Steen took off and I went with him,” Schwartz said. “I think the D men might have been cheating his way a little bit and he made a great pass over a couple of sticks and it landed on my tape and I kind of had a step on a defenseman and I just tried to get it up as quick as I could.”

The goal was the 10th of the season for Schwartz and improved the Blues’ home record to 10-0-3 in their last 13 games at home, where they have lost only once in regulation in 16 games. Four of their last five games have been decided either in overtime or a shootout.

“Not every game is going to go the way you want it to,” Schwartz said. “Sometimes you get off to a good start. Today we didn’t get off to a good start but we stuck with it and got a big comeback win.”

Part of the reason for the Blues’ slow start was their inability to take advantage of three power-play opportunities in the first period. They had 13 shots on goal against Montreal’s backup goalie, Al Montoya, but could not get a shot past him.

A fluke goal put the Canadiens in front at 10:06 of the opening period. Goalie Jake Allen could not handle the rebound of a shot by Paul Byron, and Blues’ defenseman Carl Gunnarsson kicked the puck past Allen and into the net.

The Canadiens increased the lead to 2-0 at 17:42 of the second period. Byron and Tomas Plekanec had a 2-on-1 break and Byron was able to feed a pass past defenseman Kevin Shattenkirk to Plekanec, who shot got past Allen.

The Canadiens could not maintain the lead, however, and suffered the loss in the closing game of a five-game road trip. Coach Michel Therrien preferred to look at the positives from the game, however.

“You know what? We’ve got to be satisfied,” Therrien said. “Disappointed losing the game obviously but we played against a really good hockey team and you look at the big picture. On that road trip we met really good hockey teams and they were all close games and i like the way our team played.”

Left winger Max Pacioretty had the same attitude about the game and the result.

“That's a good team,” he said of the Blues. “On the road it would have been nice to get two (points) but we battled hard and they got a little bit of life there but I thought we battled to the final.”

The win was the eighth in a row for Allen, and improved his home record to 10-0-2 this season. What he is hoping for is that the late rally gives the Blues some momentum as they begin a four-game road trip, where they are only 3-5-1 this season.

“I think we just know that unless it's a five or six goal deficit, if it's a couple goals, we're confident in our ability to go out there and score two goals,” Allen said. “You have to take it one shift at a time, not force anything, use the whole 20 minutes … We were patient, we had our chances and we played the way we wanted to play in the third. And got it done.

“I think our first two periods were a little sloppy. We came back in the third. That's a good win for us, especially against the No. 1 team in the league. It's good momentum to go on this road trip.”

The Canadiens were without their leading scorer, C Alex Galchenyuk, who suffered a lower-body injury in their game Sunday in Los Angeles. He is scheduled to be re-evaluated by team doctors Wednesday in Montreal. Galchenyuk had nine goals and 14 assists in the first 25 games of the season. He had played in 130 consecutive games. ... The Blues activated D Joel Edmundson from injured reserve but lost D Robert Bortuzzo for at least six weeks because of a lower-body injury sustained Saturday night. ... C Jori Lehtera returned to the Blues' lineup after being a healthy scratch Saturday. ... The Blues open a four-game trip Thursday night against the Islanders in New York.