Winnipeg forward Mark Scheifele did not play in Game 7 of the Jets’ first-round Stanley Cup playoff series against the St. Louis Blues on Sunday due to an undisclosed injury, coach Scott Arniel said.

Arniel ruled out Scheifele following the team’s morning skate. He was hurt in Game 5 — playing only 8:05 in the first period before exiting — and then did not travel with the Jets to St. Louis for Game 6. Arniel previously had said Scheifele was a game-time decision for Game 7.

Scheifele, 32, skated in a track suit Saturday, and Arniel told reporters the veteran was feeling better than he had the day before. Scheifele, however, was not able to participate in the Jets’ on-ice session by Sunday, quickly indicating he would not be available for the game.

Winnipeg held a 2-0 lead in the series over St. Louis before the Blues stormed back with a pair of wins to tie it, 2-2. The home team has won each game in the best-of-seven series so far.

The Jets’ challenge in closing out St. Louis only increases without Scheifele. Winnipeg already has been dealing with the uneven play of goaltender Connor Hellebuyck, a significant storyline in the series to date. Hellebuyck was pulled in all three of his starts at St. Louis while giving up a combined 16 goals on 66 shots (.758 SV%). In Game 6, Hellebuyck allowed four goals in only 5 minutes, 23 seconds of the second period.

Hellebuyck was Winnipeg’s backbone during the regular season, earning a Hart Trophy and Vezina Trophy nomination for his impeccable year (.925 SV%, 2.00 GAA).

Stars coach Pete DeBoer expects to have leading goal scorer Jason Robertson and standout defenseman Miro Heiskanen available in the Western Conference semifinals after both missed Dallas’ first-round series win over the Colorado Avalanche.

Following their thrilling Game 7 comeback victory over the Avalanche on Saturday night, the Stars await the winner of Sunday night’s Game 7 between the Winnipeg Jets and St. Louis Blues. If the Blues win, the Stars will have home-ice advantage in the best-of-seven series.

“I believe you’re going to see them both play in the second round, but I don’t know if it’s going to be Game 1 or Game 3 or Game 5,” DeBoer said after Saturday’s series clincher. “I consider them both day-to-day now, but there’s still some hurdles. It depends on when we start the series, how much time we have between now and Game 1. We’ll have a little better idea as we get closer.”

Robertson, 25, who posted 80 points (35 goals, 45 assists) in 82 games this season, suffered a lower-body injury in the regular-season finale April 16 and was considered week-to-week at the time.

Heiskanen hasn’t played since injuring his left knee in a Jan. 28 collision with Vegas Golden Knights forward Mark Stone. Initially expected to miss three to four months, the 25-year-old defenseman had surgery Feb. 4 and sat out the final 32 games of the regular season. In 50 games, he collected 25 points (five goals, 20 assists) and averaged 25:10 of ice time, which ranked fifth among NHL blueliners.