Athanasiou — who was acquired by the Oilers at the trade deadline — left the game after only one shift in the third period, but it’s unclear how he was injured. He finished the night with one shot in 11 minutes of ice time.
“I don’t think it’s too serious,” head coach Dave Tippett said post-game, according to Jonathan Willis of The Athletic. “I’m hoping, I don’t know. I haven’t talked to him. It was too sore to play in the third.”
The 25-year-old had two points in his Oilers debut Tuesday against the Anaheim Ducks. The Oilers traded forward Sam Gagner and two second-round picks to the Detroit Red Wings for Athanasiou and prospect Ryan Kuffner Monday.
The Golden Knights won the game 3-0.