CALGARY, Alberta — Go figure: After squeezing out a win in which they were badly outchanced in Edmonton, the Islanders went to Calgary, won the advanced stats competition and lost the game.

It might be overstating it, though, and more than a little, to say they were hard done by a 4-2 loss to the Flames. The Islanders were loose with the puck, got more sloppy as the game went on and struggled both to create traffic in front of the opposing crease and prevent it in front of their own.

“It’s just frustrating ’cause I don’t think we played terrible tonight,” Casey Cizikas told The Post. “Definitely didn’t play our best. At the same time, we gotta find ways of getting in those dirty areas, get in front of [the goalie’s] eyes, creating chances this way.”

The Islanders had plenty of chances, yes, but it told you something as well that by the end of the second period, Roy was experimenting with his top six, looking for some kind of spark.

By that point, the Islanders already trailed 4-1, having allowed a trio of goals in the second for the Flames to break the game open.

Adam Klapka boxed out Cal Ritchie at the net front to tip in Kevin Bahl’s shot 3:04 into the second, prompting Roy to start getting cautious with Ritchie’s minutes.

Justin Kirkland and Yan Kuznetsov then struck just 1:59 apart at 9:50 and 11:49 of the period, respectively. Kirkland’s goal followed a 2-on-1 rush off Mat Barzal’s turnover where the Islanders were uniformly late getting back; Kuznetsov was the trailer of the rush, scoring from the point with traffic in front.

“Turned the puck over a little too much,” Tony DeAngelo said. “Only gave up seven shots in the second but grade-A chances. … Too many turnovers in the second, feeding them in transition.”

Jean-Gabriel Pageau got one back for the Islanders quickly after Kuznetsov made it 4-0, but the visitors’ best chance to get two points from this one had already come and gone in the first period, when the Islanders failed to capitalize with the ice tilting their way throughout.

Yegor Sharangovich’s first-period opener came against that tide, and after what might have been the only time in the first 20 minutes that the Islanders struggled to break the puck out. Calgary duly took advantage with Rasmus Andersson feeding Sharangovich for a one-timer in the slot.

There wasn’t much of a push to speak of in the third period. Roy was reduced to emptying his net with eight minutes left in regulation, which resulted in a too-little, too-late goal from Anders Lee, who broke a nine-game scoring drought to score his 300th career goal.

The Islanders got a power play after that, perhaps raising the blood pressure on Calgary’s bench, but could do nothing with it.

Ritchie salvaged his game with an assist on Lee’s goal — timely flashes of skill have become a trademark of his, including on the game-winner against the Oilers Thursday — but the young center does seem to be hitting a wall of sorts.

“I was OK with Cal,” Roy said. “I thought he played a good game, I loved the way he played at 6-on-5, on the power play. I thought his line had a good game except maybe in the second period when we gave up that goal.”

With Rittich in net for the first time in four games, one takeaway might be a reminder of how much the Islanders have been depending on Ilya Sorokin. No one would blame Rittich for this one, but the Czech didn’t do much to keep his team in it, stopping just six of the first 10 shots he saw as the game grew out of hand.

The standings ramifications of losing a winnable game will be hard to swallow.