Buffalo Sabres forward Casey Mittelstadt left with an apparent injury during the third period of a 1-0 loss to the Anaheim Ducks inside KeyBank Center on Monday.
Mittelstadt missed 21 games after sustaining an upper-body injury during Buffalo's season opener on Oct. 16. He was playing for the third time since returning to the lineup in Florida last Thursday.
The forward completed his last shift against the Ducks with 13:56 remaining in the contest before leaving for the dressing room.
At the Final Horn | Mittelstadt exits early in loss to Ducks
Luukkonen stops 21 shots in season debut.
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