"It was a frustrating game," Jets defenseman Josh Morrissey said. "It just felt like we were right there, and the puck just kind of didn't go our way a couple times. We had a lot of chances. Give him credit, their goalie made a lot of big saves.
"These are the ones where you feel like you do a lot of good things, and then you end up with nothing to show for it, nothing on the board."
Donskoi scored on the power play at 13:13 to make it 4-0.
"It wasn't our best game, but we played hard and did some really good things," Avalanche coach Jared Bednar said. "Our goalie steps up. And Nathan MacKinnon and his line too. We were, you'd say, a little bit opportunistic tonight."
Werner was recalled from the Colorado Eagles of the American Hockey League on Nov. 7 with No. 1 goalie Philipp Grubauer out with a lower-body injury. The 22-year-old was selected in the fifth round (No. 131) of the 2016 NHL Draft by the Avalanche.