Sabres' Casey Mittelstadt: Moves to injured reserve

Mittelstadt (upper body) was placed on injured reserve Wednesday, per CapFriendly.

Mittelstadt is slated to undergo additional testing after suffering an injury Tuesday versus the Ducks. It's unclear if it's an aggravation of a previous injury that kept him out for 21 games. With the move to IR, he won't be back until next Tuesday's game versus the Jets at the absolute earliest.