Pavel Zacha had a goal and an assist, and Joonas Korpisalo made 34 saves for Boston (7-7-1), which has won three of its last four (3-1-0). David Pastrnak had two assists.

“I thought (Korpisalo) was good, especially in the second (period),” Bruins coach Jim Montgomery said. “I thought he made a lot of key saves when we extended our lead to 3-1.”

Nazem Kadri, Yegor Sharangovich and Tyson Barrie scored and Dustin Wolf made 34 saves for Calgary (7-5-2), which has lost six of its last eight (2-5-1).

“I thought it was a good match. It was a tough game,” Flames coach Ryan Huska said. “And I liked the way our guys…the way we held each other again. I mean, that’s kind of a hallmark of our team is that we always feel like we’re always in the games. So I’m happy with the way they showed resilience tonight, and that’s an important point for us.

The Flames trailed 3-1 early in the third period, but Sharangovich cut the score to 3-2 at 0:58 of the third power play, redirecting MacKenzie Weegar’s point shot.

Kadri tied it 3-3 at 9:55, skating in and beating Korpisalo on the glove side.

“It’s good to show composure and composure, and I think that’s the key,” Kadri said. “Obviously on the road you could start forcing things or just stick to your game plan, and that’s exactly what we did. Made a few great plays to get back in the game, and just one unfortunate bounce to end it.