Ullmark has been out of Ottawa's lineup since Dec. 22 when he left a game after one period of play in Edmonton with back tightness. It sounded precautionary at the time but turned out to be reasonably serious. This is Ullmark's second stint on the injury list. He missed a couple of weeks of action back in mid-October.

When Linus Ullmark injured his back in the first period against the Edmonton Oilers on Dec. 22, many of the Ottawa Senators’ worst fears were realized.