"Every game that I'm playing now, confidence is growing," said Mangiapane, who scored four goals in four games for Canada at the 2021 IIHF World Championship after last season. "I think maybe when I first came into the League I was a little shy, not looking to make a play, play it safe, chip it in. But now I'm just trying to play my game, play with confidence. You've got to play with confidence in this league, and right now pucks are going in for me."
Igor Shesterkin made 32 saves for New York (4-2-1), who had a four-game winning streak end.
It was the Rangers' seventh game in 13 days. They're tied with the Toronto Maple Leafs for the most games in the NHL this season.
New York had 20 giveaways, including nine in the first period, when Calgary had 15 shots on goal. Rangers coach Gerard Gallant said the Flames had 10 scoring chances from the slot in the first period.
"We just made so many bad turnovers in the first period, trying to make cute plays instead of the strong plays up the boards, and it really cost us," Gallant said. "Even though it was 1-0 after the first, we made a lot of turnovers, and [Shesterkin] had to be unbelievable in the first period. I think that really cost us the hockey game. Even though we got back in the third period and made it 2-1, the first period was a tough one to watch."
Chris Tanev gave the Flames a 1-0 lead at 18:50 of the first period, finishing off a 3-on-2 rush with a low, short-side shot from the right face-off circle for his first goal.
The Rangers' first of three giveaways in the second period led to Mangiapane's first goal that put the Flames ahead 2-0 at 2:09.
Patrik Nemeth had the puck below the goal line and fed it to Mangiapane in the right circle. The Flames forward turned and scored with a shot to the far side to extend his goal streak to three games.
"The puck just kind of came to me there, and I was just trying to get it to the net, it happened to go in for me," Mangiapane said. "Good job by our line to get in there and cause the turnover."
Kevin Rooney got the Rangers to within 2-1 at 5:25 of the third period. Markstrom made the save on Jacob Trouba's point shot, and Rooney scored from the top of the crease after New York forward Dryden Hunt tipped the puck.