David Pastrnak scored the game-winning goal after an earlier assist as the visiting Boston Bruins rallied past the St. Louis Blues 3-2 Tuesday night.

Charlie McAvoy also had a goal and an assist and Morgan Geekie added a goal for the Bruins, who erased a 2-0 deficit in the third period to improve to 4-1-1 in their last six games. Jeremy Swayman made 20 saves to earn the victory.

Bruins defenseman Hampus Lindholm suffered a lower-body injury while blocking a shot in the first period and didn’t return.

Brayden Schenn and Oskar Sundqvist scored for the Blues, who lost for the sixth time in their last eight games (2-6-0). Jordan Binnington made 27 saves.

Boston got two power plays and outshot the Blues 9-6 overall during the scoreless first period.

The Bruins built a 20-12 edge in shot attempts midway through the second period, but St. Louis got the best scoring chance on Jordan Kyrou’s breakaway. But Kyrou failed to beat Swayman with a late move to his backhand.

Schenn put the Blues up 1-0 with a power-play goal midway through the second period, snapping the team’s 0-for-21 slump at home with the man advantage. Pavel Buchnevich set up Kyrou’s shot from the low slot, then Schenn converted the rebound.

St. Louis struck again on the power play less than three minutes later to make it 2-0. Sundqvist parked at the left post and scored off Dylan Holloway’s cross-crease pass.

After Nathan Walker fired a shot off the post for the Blues, the Bruins cut their deficit to 2-1 when Geekie scored on a 2-on-1 rush with Pastrnak with 15:07 left to play.

McAvoy tied the game 2-2 with a slap shot from the blue line through heavy traffic with 10:45 left.

The Bruins sustained pressure from there, creating one goalmouth scramble after another. They finally took the lead with Pastrnak’s one-time blast from the left circle that bled through Binnington with 1:47 left.