Calgary Flames goaltender Dustin Wolf skates away as Bruins players celebrate after scoring in overtime to earn a 4-3 win Thursday night in Boston. Steven Senne/Associated Press

BOSTON — Brad Marchand shed the goat horns just in time to lift the Boston Bruins to a 4-3 overtime victory over the Calgary Flames at TD Garden on Thursday.

Elias Lindholm stole the puck behind the net and fed Marchand out front. Dustin Wolf made the initial save, but Marchand was able to get his backhand on it and sweep it back into the net for the winner – his second OT goal of the season.

Marchand had taken a bad penalty early in the third period that led to Calgary wiping out a two-goal Bruins lead

The Bruins began the game with some jump and took the first lead of the game just 2:04 in. Coach Jim Montgomery once again tried the Pavel Zacha-David Pastrnak combination, with Zacha at center and Tyler Johnson at left wing, and it paid off immediately.

Pastrnak received a Zacha pass on the right wing, did a tight circle in the top of the right faceoff circle, and found Hampus Lindholm cutting in from the left point. Lindholm took the puck to his backhand and beat Calgary goalie Dustin Wolf on a backhander.

Just 19 seconds later, though, Calgary answered. The Flames won a draw in the Boston zone back to Tyson Barrie at the blue line, and Joonas Korpisalo reacted late to Barrie’s long wrister, allowing a backbreaking goal.

The troubling Bruins habit of taking penalties continued late in the first period. First, Mason Lohrei was called for crosschecking in the defensive zone. After the Bruins killed that off, Nikita Zadorov took his league-leading 11th minor on a trip in the offensive zone.

The Bruins killed off most of that one, too, with Marchand ending the Calgary power play when he forced Wolf to take a tripping penalty behind the Calgary net. On the ensuing power play, Marchand nearly gave the Bruins the lead again when he dinged the post with about nine seconds left in the period.

Early in the second period in a 4-on-4 situation, Marchand clanged the post again on a 2-on-1 off a Charlie Coyle steal.

The Bruins finally reclaimed the lead at 8:25, and again it was the new first line that scored. Pastrnak fought through a Justin Kirkland check along the right boards and managed to get a deflected pass over to Zacha. Before the puck even settled, Zacha ripped a one-timer past Wolf for his second goal of the year.

Montgomery was trying different combinations, and another new group – Cole Koepke-Coyle-Matt Poitras – extended the lead on the next shift. Coyle stole the puck in the neutral zone and then powered his way to the net along the right side before dishing across the top of the crease to Koepke for a tap-in – his fourth of the year.

But nothing is easy for this Bruins team. Nine seconds into the third period, Marchand got into some pushing and shoving with Martin Pospisil, who was tossed out of the game in Boston last year for a high hit on Marchand. This time, the Bruins captain got the last shot in and paid for it with the only penalty.

On the man advantage, Yegor Sharangovich redirected a Mackenzie Weegar point shot past Korpisalo to make it a one-goal game 58 seconds into the period.

Then the Flames tied it at 9:55 on a botched play in the offensive zone. The Bruins looked like they had numbers going on the attack as Coyle carried the puck into the zone, but just before he could make a play, he fell down. With Charlie McAvoy supporting Coyle on the attack, that allowed the Flames to counter with a 2-on-1, and Nazem Kadri snapped the puck over Korpisalo’s glove to even it.