Petry participated in the Canadiens' deep run during the 2021 Stanley Cup playoffs, culminating in an appearance in the 2021 Stanley Cup Finals, where they lost to the Tampa Bay Lightning in five games. Petry sustained a finger injury in the course of Game 3 of the second round series against the Winnipeg Jets, causing him to miss two games.
Petry participated in the Canadiens' deep playoff run, culminating in a Stanley Cup Finals appearance, where they lost to the Tampa Bay Lightning in five games. Petry suffered a finger injury during Game 3 of the second round series against the Winnipeg Jets, leading to him missing two games.