Round One of four games between the Bruins and Canadiens at the Bell Centre went to the undermanned Bruins, 2-1, thanks to a little lineup shuffling that created a third period comeback.

P.K. Subban had broken a scoreless tie at 10:53 of the second.

With Milan Lucic in the box for high-sticking, Subban’s shot from the right point that deflected off Rich Peverley’s stick and beat Tuukka Rask up high.

But at the start of the third, coach Claude Julien mixed up his top two lines and it paid immediate dividends. With Tyler Seguin taking Nathan Horton’s spot with David Krejci and Milan Lucic, Seguin took a feed from Krejci scored on a backhander just 14 seconds into the period.

Then on their second shift, they gave the B’s the lead on a nice 3-on-2 rush, with Krejci putting hie a Lucic pass for the 2-1 lead.

The B’s played a bit of a rope-a-dope late in the third period until Subban took a penalty with 1:02 to go. But Krejci was called for a hook with 34 seconds left, and they had survive a couple of anxious seconds, but they did.

In Round 1 of the four-game season series between the Bruins and Canadiens, the Habs took a 1-0 lead into the third period thanks to a second period power-play goal by P.K. Subban.

With the way the game started, it looked as if the resurgent Habs might blow out the B’s.

Rask came in looking to improve a woeful 1-6-1 personal record against the Canadiens and, in the first period, had his “A” game going. And it was a good thing because the Habs pretty much dominated the opening 20 minutes, outshooting the B’s, 11-4. Rask also had some help from his friends along the way.

First, a backchecking Chris Bourque was able to bother Colby Armstrong just enough to keep the Montreal forward from tapping a puck into an open net on a quick developing 2-on-1.

Then Tomas Plekanec made a great move around an aggressive Rask and had a chance to tuck it home on the shortside, but Dougie Hamilton came in behind Rask and made the stick save.

Rask made plenty of his own saves, however, with one of the best coming off a Lars Eller breakaway at 10:21.

The B’s, who didn’t get their first shot on net until there were more than 11 minutes gone, led in power plays, 2-1, but they couldn’t do anything with them.

Ryan Spooner, making his NHL debut, showed some very nifty hands a couple of times, making a good maneuver to get the puck into the zone and also to help draw the second penalty, which was a hook by Subban on Jamie Tardif though Subban was out of position because of Spooner’s work along the boards.