Flyers' biggest mistake: They failed on four attempts to clear the puck once the Penguins entered the zone.
How it happened:The Penguins, with their fourth line on the ice against the Flyers' top line of Claude Giroux, Sean Couturier and Raffl, got the puck into the zone at 9:25, 42 seconds before Hagelin scored. The Flyers wilted under the Penguins forecheck, the worst instance coming when Couturier gloved the puck down, had it on his stick near the blue line, but had it whacked away by Hagelin, who had just come onto the ice on a partial line change. Hagelin darted to the net and scored.
"You give them back pucks in crucial zones of the ice and they're going to torch you, and they did," Simmonds said. "You give them two chances, they'll score two goals. You can't give them anything, because when they get something they usually put it in the back of the net."
Penguins' third goal: Evgeni Malkin scored on a solo rush at 14:09 of the first period, putting a backhand shot past Elliott 12 seconds after coming out of the penalty box.
Flyers' biggest mistake: They didn't generate on the power play, allowing Malkin to get a loose puck and skate toward Elliott untouched. Elliott never came out to challenge Malkin, giving him a better shooting angle.
How it happened: The Flyers didn't generate any shots on goal during the power play. With Malkin out of the box, the Flyers had a pass go untouched through the crease and defenseman Shayne Gostisbehere's shot from the point was blocked by Hagelin. Malkin got to the puck after the block, one of 24 for Pittsburgh in the game, and started a rush that took him around Flyers forward Jakub Voracek, through Giroux and a backing-up Gostisbehere before he beat a flat-footed Elliott on the far side with a backhand shot from the right circle.
"With the speed of their game and the lack of time and space they allowed us last night, it comes down to execution," Hakstol said. "We've got to execute quicker and better."
They now know what can and likely will happen if they don't.
"Ugly," Giroux said.