"Buffalo Sabres leading scorer Tage Thompson suffered a lower-body injury in Monday's game against Montreal. He left in the second period and did not return, with no update on his condition provided by the team. The Sabres also lost defenseman Mattias Samuelsson to a similar injury during the same game."

Source: https://ca.sports.yahoo.com/news/sabres-leading-scorer-tage-thompson-211303075.html