With Dallas Stars coach Pete DeBoer announcing at practice on Thursday that Finnish defenseman Miro Heiskanen has been ruled week-to-week with a knee injury, the team was gearing up to play an extended period of time without one of their key players.

Stars defenseman Miro Heiskanen is week to week with a lower-body injury, and the standout from Finland won't play in next month's 4 Nations Face-Off tournament.

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.

Stars head coach Peter DeBoer told reporters Thursday that Miro Heiskanen has been ruled out week-to-week due to a lower-body injury.

The Dallas Stars could be without star defenseman Miro Heiskanen for the foreseeable future, and he might miss the 4 Nations Face-Off Tournament. Heiskanen has been ruled out week-to-week with an injury.