The Ottawa Senators roster has been hit with another injury.

Peter Regin will be out of lineup tonight after re-injuring his left shoulder in Tuesday’s game against the Buffalo Sabers. The centreman was missing from today’s morning skate and is not expected to hit the ice anytime soon.

Regin has been plagued by shoulder injuries since last February. He re-injured it already this season on Oct. 20 and was out for 22 games.

Senators Coach Paul MacLean said Regin is currently looking into further treatment options, with surgery being one of them. Until then, he will be out indefinitely.

Meanwhile, Milan Michalek skated again Thursday, but will not play against the Florida Panthers. While he is feeling well, he won’t return to the lineup until after the Christmas break.

“I feel pretty good,” said Michalek. “But I’m going to take an extra few days to work on my conditioning. I want to be 100 per cent ready before I come back.”

There are no updates as to the time frame for the return of Jesse Winchester, who also suffered an injury in Tuesday’s game. MacLean said Winchester has not done any physical activity since the game.

The addition of Kyle Turris to Senators’ lineup couldn’t have come at a better time, with the young centre expected to add depth up the middle.

The Florida Panthers are a surprisingly tough opponent. They’re coming off to a surprisingly strong start and have been holding on ever since. They are currently sitting comfortably at the top of their division, seven points ahead of the Washington Capitals.

MacLean says the Senators will have to watch out and be aware of the Panthers’ top-scoring line of Tomas Fleischmann, Stephen Weiss and Kris Versteeg.

“They are playing real well,” said MacLean. “We’re going to have to pay attention to them and make sure we know when they are on the ice.”