"I thought it was a tight game, a full 60 minutes," Jankowski said. "Both good teams, we knew it was going to be a good game, and a tight one, not a lot of space out there, time or space for either team."
Perreault made it 2-1 on the power play at 10:18 when he poked in a loose puck in the slot.
"That was huge," Perreault said. "That's the difference in the game, really."
Flames forward Sam Bennett (undisclosed) was a late scratch. Coach Bill Peters said he was "banged up" and that the injury got worse overnight. Calgary played with 11 forwards and seven defensemen.