Mikhail Grabovski, who is dealing with a concussion, was placed on injured reserve retroactive to Oct. 16, the New York Islanders announced Wednesday.
Grabovski suffered the injury after taking a heavy hit from San Jose Sharks forward John Scott in a game on Oct. 16.
Grabovski sustained a concussion in a victory against the San Jose Sharks on Oct. 16. He would be eligible to return to the ice Friday. Grabovski has two goals and three points in four games this season.
Also on Wednesday, the Islanders placed Colin McDonald on waivers.