Just when it seemed like the Boston Bruins were going to head into the first intermission riding high, the visitors swung the momentum.

With the Bruins leading the Philadelphia Flyers 1-0 at TD Garden on Thursday, Claude Giroux snuck behind Boston’s defense en route to a breakaway goal with 44 seconds left in the opening frame. The game-tying goal provided a jolt to the Flyers, who clawed their way to a 3-2 overtime win.

After the game, Bruce Cassidy discussed the game-altering play. To hear from the head coach, check out the video above from “Bruins Overtime Live,” presented by Ace Ticket.

Thumbnail photo via Bob DeChiara/USA TODAY Sports