Defenseman Miro Heiskanen was injured in the third period of the Dallas Stars’ 4-3 overtime victory over Vegas after taking a hit from Golden Knights captain Mark Stone.

The star defenseman will likely be out for months, if not the rest of the season. Expect the Stars to struggle in his absence, and to have a much better understanding of their roster when he returns.

Defenseman Miro Heiskanen was injured in the third period of the Dallas Stars‘ 4-3 overtime victory over Vegas on Tuesday night after taking a big hit from Golden Knights captain Mark Stone. Stone fell toward Heiskanen’s left knee and thigh after getting tripped.