BOSTON — Jake Allen stopped 32 shots for his fifth shutout, Vladimir Tarasenko and Robby Fabbri scored third-period goals, and the Blues shut out the Bruins 2-0 Tuesday night.
It was only the second regulation loss in 16 games for Boston (11-2-3). St. Louis posted its fifth win in seven games.
The Bruins had won six of their past eight at home.
Boston goalie Tuukka Rask made 27 saves but lost in regulation for the first time in 11 starts after going 8-0-2.
Tarasenko took a pass and came charging down the slot before slipping a wrister past Rask's blocker for his team-leading 22nd goal to make it 1-0 at 7:35 of the third. It extended the wing's point streak to a season-high seven games, with six goals and five assists during that span.
"Tonight was a full 60 (minutes)," Allen said. "We got the job done, and the goals came in the clutch."
Fabbri snapped off a shot from the left circle that beat Rask inside the far upper corner with just more than 7 minutes to play.
St. Louis had the only power play in a well-played, clean game that featured one third-period fight.
Despite the scoreless opening two periods, both teams had some very good scoring chances, with the best coming off the opening faceoff.
The Blues had the opportunity in the opening half-minute when Troy Brouwer split two defensemen, broke in alone and fired a wrister that Rask blocked with his left arm.
St. Louis wing Alexander Steen fired a shot that caromed directly off the right post midway into the second before Allen made a stellar stop on Brad Marchand's backhander about 4 minutes later.
Marchand collected a rebound at the bottom of the right circle, but Allen came sliding across quickly to make the save.
The Bruins owned a 26-21 edge in shots on goal over the first two periods, which featured a good amount of end-to-end play. But solid defensive positioning by both teams led to few second chances.
Rangers 3, Ducks 2 OT: Mats Zuccarello scored a power-play goal at 2:37 of overtime and the slumping Rangers beat the visiting Ducks 3-2 for their fourth win in 15 games.
Derrick Brassard had two goals and an assist as the Rangers snapped a three-game losing streak. Henrik Lundqvist made 17 saves.
Corey Perry and Rickard Rakell scored for the Ducks, who lost their second in as many nights and for the fourth time in five games. John Gibson stopped 19 shots.
The Ducks, who lost Game 7 of the Western Conference final to the Blackhawks last season, enter the Christmas break in last place in the West.
The Rangers got the power play when defenseman Cam Fowler was called for holding New York defenseman Ryan McDonagh as he broke into the offensive zone.
Brassard's second goal, a one-timer from the doorstep after Zuccarello intercepted Jiri Sekac's clearing attempt, made it 2-1 at 2:44 of the third period. But Lundqvist gave up Rakell's equalizer over his glove from the left circle with 2:54 left in regulation.
First Period—None. Penalties—None.
Second Period—None. Penalties—Connolly, Bos (tripping), 14:26.
Third Period—1, St. Louis, Tarasenko 22 (Paajarvi, Backes), 7:35. 2, St. Louis, Fabbri 7 (Pietrangelo, Bouwmeester), 12:50. Penalties—Reaves, StL, major (fighting), 2:52; Randell, Bos, major (fighting), 2:52. Shots on Goal—St. Louis 10-11-8—29. Boston 14-12-6—32. Power-play opportunities—St. Louis 0 of 1; Boston 0 of 0. Goalies—St. Louis, Allen 16-8-2 (32 shots-32 saves). Boston, Rask 13-8-3 (29-27). A—17,565 (17,565). T—2:26.
First Period—1, Anaheim, Perry 11 (Rakell), 11:16. 2, N.Y. Rangers, Brassard 12, 17:50. Penalties—Maroon, Ana, major (fighting), 5:35; Glass, NYR, major (fighting), 5:35; Boyle, NYR (holding), 7:05; Santorelli, Ana (high-sticking), 12:43.
Second Period—None. Penalties—Kesler, Ana (interference), 2:44; Kesler, Ana, major (fighting), 6:48; Miller, NYR, major (fighting), 6:48; Bieksa, Ana (cross-checking), 7:22; McIlrath, NYR (hooking), 12:49.
Third Period—3, N.Y. Rangers, Brassard 13 (Zuccarello), 2:44. 4, Anaheim, Rakell 7 (Getzlaf, Fowler), 17:06. Penalties—Hayes, NYR (hooking), :33; Summers, NYR (holding stick), 5:05; Kesler, Ana (interference), 14:20.
Overtime—5, N.Y. Rangers, Zuccarello 15 (Boyle, Brassard), 2:37 (pp). Penalties—Fowler, Ana (holding), 1:07. Shots on Goal—Anaheim 8-5-6-0—19. N.Y. Rangers 5-5-10-2—22. Power-play opportunities—Anaheim 0 of 4; N.Y. Rangers 1 of 5. Goalies—Anaheim, Gibson 4-4-2 (22 shots-19 saves). N.Y. Rangers, Lundqvist 16-9-3 (19-17).