What happened: Brad Marchand needed help leaving the ice with an apparent lower-body injury. It was his second game back after recovering from offseason surgery for a previous lower-body injury.

Why it matters: The timing compounds concern because the new issue follows surgery for a previous lower-body injury. An extended absence would thin the forward rotation early in the season. Availability for upcoming games now becomes the roster question.

What to watch: Watch for official status updates and availability for the next game.