“It’s a hard game to play,” coach Darryl Sutter said. “It’s a game where the kids on the other side are going to come out and try and show their worth, and they did.”
Markstrom made 22 saves as Calgary won for the seventh time in eight games. Gaudreau and Oliver Kylington tacked on long empty-netters for the Pacific Division leaders in the final 1:32.
“The guys battled to the end, the whole third period,” Markstrom said.
Chicago lost for the 10th time in 11 games. Tyler Johnson and Alec Regula scored, and Kevin Lankinen made 30 stops.
The Blackhawks finished the game without Mackenzie Entwistle after the forward departed in the first period with a right shoulder injury.
Chicago was down 3-1 when Regula’s long shot from the top of the left circle appeared to go off Markstrom and into the net 12:54 into the second period. It was the first career point for the defenseman in his 13th NHL game.
But that was it for the Blackhawks against Markstrom and Co. Markstrom made a glove save on Reese Johnson with 4:09 left in the third, and the two empty-netters put it away for Calgary.
The Flames got off to a fast start behind Dube, who redirected Noah Hanifin’s shot past Lankinen just 22 seconds in. It was Dube’s fourth goal in his last three games and No. 14 on the season, extending his career high.
The return of Connor Murphy likely will be up to the defenseman, King said. Murphy hasn’t played since March 12 because of the NHL’s concussion protocol, and the seventh-place Blackhawks have six games left this season.
Flames: At Nashville Predators on Tuesday night.
Blackhawks: At Arizona Coyotes on Wednesday night.
Jay Cohen can be reached at https://twitter.com/jcohenap
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