During the second period of the game against the Buffalo Sabres, Ilya Lyubushkin collided with Marchand, causing him to awkwardly hit the boards and show signs of pain. As a result, Marchand had to leave the game, and the Bruins announced that he would not be able to return. This is a major blow for the team, as they were already without Nick Foligno and Taylor Hall, and losing another left winger would hurt their chances.