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.

Dallas Stars defenseman Miro Heiskanen is week-to-week with a lower-body injury sustained on a big hit from Vegas captain Mark Stone, and the standout from Finland won't play in next month's 4 Nations Face-Off tournament.

Miro Heiskanen is week to week for the Dallas Stars with a knee injury. The timeline also means the defenseman will likely miss the upcoming 4 Nations Face-Off, with will take place in Montreal and Boston from Feb. 12-20. He had been selected to play for Team Finland along with Stars teammates, defenseman Esa Lindell and forward Roope Hintz.

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 former Ottawa Senators star was ripped on social media after colliding with Miro Heiskanen's knee on Tuesday night.

In the third period of a tight contest, Stone was tripped by Stars forward Roope Hintz, causing him to lose balance. As he fell to the ice, he took out Heiskanen’s leg. The blue liner immediately grabbed his left knee and was in visible pain as he headed towards the tunnel with the help of his teammates.