Blame a porous defense and the team's failure to win on home ice. The Flyers failed to take a shot on goal until almost 12 minutes into the third period and Couturier capped his three-goal game with 2:53 left to play.
Couturier had been the Flyers' post-seasonsaviour, returning from a serious leg injury to score the Game 5 victor and then open Game 6 with his third goal of the series just 2:15 into the game. Ivan Provorov mishandled the puck and Kessel was able to steal it away.
Pittsburgh scored in the final 54 seconds of the second, so it had two goals in 86 seconds.
Trailing 5-4, the Flyers failed to connect on a four-on-three power play midway through the third period. 12, Philadelphia, Couturier 5 (Giroux), 17:07.
With that, the Penguins have now won nine consecutive playoff series.More news: India will allow death penalty for rape of childen under 12
Including the regular season, Pittsburgh won all five games against the Flyers at the Wells Fargo Center, outscoring them, 28-9. That's the longest stretch in franchise history.
Surprisingly enough, the Penguins killed that penalty but followed it about 30 seconds later with a defensive breakdown that led to the Flyers taking a 4-2 lead at 12:14 of the second period.
That ended a 27-game goal drought for Laughton dating back to February 18.
"Mur-ray ... Mur-ray ..."
The Penguins responded, capitalizing on a Radko Gudas turnover and getting to within 4-3 on a slick tic-tac-toe passing play that finished with a Hornqvist goal with 6:25 left in the second.More news: European agency orders expanded Boeing 737 engine checks after accidents
"This is what you want to play in", Guentzel said.
Couturier was everywhere. Winning puck battles. The forward deked the puck around Murray to put the Flyers ahead again, 3-2. Couturier collected his fourth point with the primary assist in the fourth goal.
Yes, the same Scott Laughton who fanned on an open net in Game 1 to set up Murray's spectacular save that gave the Flyers a two-goal edge by firing a shot from the left wing past Murray. Our team doesn't get rattled.
The Penguins defeated the Capitals in the second rounds of the 2016 and 2017 playoffs on their way to back-to-back Stanley Cup Championships. Off a face-off, Kris Letang fired a shot that Michal Neuvirth stopped with the pad, but the rebound went right to Sidney Crosby, and he didn't miss, tying the game with his sixth goal of the series at 6:30.
Andrew MacDonald tied it 2-all on a sizzling shot. Couturier (who else?) helped set up the goal. Neuvirth made two stellar saves - one on a deflection and another from Conor Sheary that clipped his pad and hit the post.More news: Current Man City side the best in Premier League era?