The Flyers’ Joel Farabee, right, scores a goal on Pittsburgh Penguins goaltender Tristan Jarry during the second period Wednesday in Philadelphia. (AP photo)

The unconventional opener was decided when Raffl scored from the slot and beat Tristan Jarry 5:37 into the third for a 4-3 lead and the only cheers for the go-ahead goal came from Flyers fans watching at home.

The Flyers pounced from there — Travis Konecny and Kevin Hayes scored 20 seconds apart to turn this one into a rout.

Mark Jankowski and Sidney Crosby scored for the Penguins.

Crosby’s goal was about expected against a team he has tortured like no other. He was greeted by strange silence in the empty arena — 20,000 Flyers fans generally lose their minds chanting “Crosby sucks!” — and he simply skated away without a boo to be heard after his tying goal.

The Pittsburgh Penguins' Sidney Crosby, center, heads for the puck after winning a faceoff against the Flyers' Scott Laughton, right, with Michael Raffl, left, following during the third period on Wednesday in Philadelphia. The Flyers won 6-3. (AP photo)

Crosby’s 44th goal against the Flyers, more than any other team in the league, in 71 games was one of his best. Carter Hart tried to clear the puck from behind the net and his lazy pass was batted down by Crosby and poked in an empty net to make it 2-2.

Jankowski, who scored just five goals last season, scored the first one of this season 5:12 into the game.

Erik Gustafsson had to settle for assists on two shots that seemed destined to find the back of the net in the first period. His first slapper knocked off van Riemsdyk’s stick to tie it 1-1. Gusafsson’s next shot was deflected by Patrick with 7.8 seconds to make it 2-1.