Chris Simon. (CPimages/AP Photo/NHL, HO)
The league suspended Simon indefinitely after he drilled New York Rangers forward Ryan Hollweg with a two-handed stick swing to the face in a game on Thursday night.
Hollweg took a few stitches in the chin but was not seriously hurt.
Simon, a veteran of 14 NHL seasons, has 27 points (10-17) and 75 penalty minutes in 67 games this year.
It was not clear when the league would announce its final decision on the length of his suspension.