DENVER -- The Winnipeg Jets are on the verge of getting eliminated in five games in the first round of the Stanley Cup playoffs for the second straight season.

A 5-1 loss Sunday to the Colorado Avalanche sent the Jets into a 3-1 series hole while facing numerous questions about what has gone wrong with them since they won Game 1.

"The problems are self-inflicted," Jets coach Rick Bowness said. "Want to take penalties? Want to play a three-quarter ice game? You're playing right into their hands."

One of the main questions facing the Jets: What's going on with star goaltender and 2020 Vezina Trophy winner Connor Hellebuyck?

Hellebuyck entered the playoffs with a 37-19-4 record, a 2.39 goals-against average and a .921 save percentage. It was the sort of season that allowed the Jets to finish with 52 wins and 110 points and become discussed as a serious challenger in the Western Conference.

It's also why Hellebuyck is in line to potentially win a second Vezina as he finished the regular season ranked second in wins, second in save percentage, third in GAA among goaltenders with more than 40 games and fifth in shutouts.

This postseason, however, has provided a contrast.

The Jets were formidable in the regular season in part because they allowed 29.6 shots per game, 11th fewest in the NHL, while also giving up the ninth-fewest scoring chances per 60 minutes, according to Natural Stat Trick.

In four games against the Avs, they have allowed an average of 38.3 shots. Only the Los Angeles Kings have allowed more, at 38.7 per contest, this postseason. As for their scoring chances per 60, only the Vegas Golden Knights have given up more than the Jets on that front.

Sunday was a reflection of that reality. Hellebuyck faced more than 30 shots and allowed more than four goals for a fourth straight game. It led to him being pulled to start the third period, with the Jets turning to Laurent Brossoit to finish the contest.

Hellebuyck has a 5.05 GAA, a .870 save percentage and has allowed 19 goals through four playoff games.

"[To] give him a break," Bowness said of why he pulled Hellebuyck. "It was just too much. ... He was having to make save after save. Just giving him a break. It's not on him whatsoever. It's on the players in front of him."

Jets alternate captain Mark Scheifele agreed with Bowness' assessment.

"I don't think those goals are his fault," Scheifele said. "He's our backbone, he's our heart and soul."

Giving up power-play opportunities and watching the Avalanche convert those chances are what doomed the Jets in a 5-2 loss in Game 3.

The same issue hindered them again Sunday.

Both teams went on the power play four times, but the Avalanche scored twice while the Jets didn't score at all. Valeri Nichushkin, who finished with a hat trick, scored the first power-play goal that gave the Avs a 2-1 lead more than eight minutes into the second period.

After star defenseman Cale Makar pushed the lead to 3-1 more than four minutes later, Nichushkin increased the lead to 4-1 with his second power-play goal of the day. He completed the hat trick with an empty-net goal in the third.

"For us right now, we're working well as a five-man unit," Makar said. "I think both power-play units are doing a great job at puck possession and finding ways to generate opportunities at the net, whether that's to screen or getting pucks there. For us, I think it's just a cohesive unit right now and we're trying to find different ways to exploit them."

The Jets entered Sunday without defenseman Brenden Dillon, who sustained a lacerated right hand as part of an on-ice scrum at the end of Game 3.

Dillon's absence was compounded by the fact the Jets also lost Vladislav Namestnikov in the third period. The forward, who once played for the Avalanche, was injured when the Jets won a faceoff and a Nate Schmidt slap shot struck Namestnikov's face.

Namestnikov was on the ice for a few minutes before slowly getting up. The Jets athletic training staff assisted Namestnikov, who compressed the blood on his face with a towel, to their back room for treatment. Bowness said Namestnikov was taken to a hospital but the coach had no update on his condition.

After missing the playoffs in the 2021-22 season, the Jets returned in 2022-23 and opened with a 5-1 win over the Vegas Golden Knights before losing the next four games to the eventual defending champions.

Having one of the strongest regular seasons of any team in the NHL led to the belief that this year could be different. The idea was made even more real by the fact that they were 3-0 against the Avs and scored 17 goals in those contests.

Now the Jets must win Game 5 or they will have another early exit as the Avs try to win their second Stanley Cup title in three years.

"It's completely different," Scheifele said when asked if this year's playoffs are similar to those of last season. "Completely different teams on both sides of the coin. We had a good regular season against them. They made adjustments and we haven't. We've got to bring a different game come Tuesday."