Dallas Stars defenseman Miro Heiskanen underwent knee surgery in New York on Tuesday. Stars coach Pete DeBoer told reporters before Tuesday night’s game against the Anaheim Stars that Heiskanen’s status is classified as “month to month,

Miro Heiskanen is considered month to month for the Dallas Stars after having knee surgery Tuesday. The defenseman left a 4-3 overtime win against the Vegas Golden Knights on Jan. 28 at 7:56 of the third period after Vegas forward Mark Stone collided with his left leg.

Heiskanen is now the third critical player the Stars have lost for an extended period of time. Tyler Seguin is out for four-to-six months following hip surgery he had done in December, and Mason Marchment has missed a month for face surgery after taking a puck to the face in late December.