In game six, after both Brayden Schenn and Ryan O'Reilly were sent to the penalty box for boarding and delay of game respectively, Boston forward Brad Marchand scored on the resulting 5-on-3 power play. In the second period, both teams were relatively even in shots, Boston with eight and St. Louis with ten, but neither team scored. In the third period, Bruins defenceman Brandon Carlo shot a bouncing puck towards Jordan Binnington which snuck under the Blues goaltender's blocker for the second goal of the game. Karson Kuhlman gave Boston a three goal lead with his first goal of the playoffs. St. Louis got on the board when O'Reilly's shot appeared to cross the goal line after a video replay. The Bruins regained their three-goal lead when the Blues in a defensive scramble left David Pastnak alone in front of the net and he fired the puck past Binnington. The Blues pulled Binnington in an attempt to tie the game, but Zdeno Chara sealed the victory for the Bruins finalizing the score and sending the series to a seventh game. Bruins win 5-1.