When the first period ended, Ullmark left the game. He had then saved six out of seven shots. His status ahead of the next meeting is unclear.
His back tightened up, so I felt it was best if he was taken out, said Ottawa's head coach Travis Green to reporters after the 1-3 loss.
Before that, Edmonton's Viktor Arvidsson had made it 1-0 against Ullmark, about a quarter into the game.
I just tried to shoot as hard as I could into the net, says the Swedish goal-scorer to NHL's website.
Ullmark was not the only Swedish star who had to throw in the towel in tonight's NHL.
Also, Anaheim's Swedish star forward Leo Carlsson stepped off the ice in tonight's meeting against Utah due to an unclear injury. The club has not announced his injury status.
Teammate Isac Lundeström scored one of the goals in the game, which was decided on penalties and ended 5-4 to Anaheim.
Both Leo Carlsson and Linus Ullmark have been selected to Tre Kronor's squad in the star-studded Four Nations tournament in February.