Five different players scored as Pittsburgh chased former Penguin Marc Andre-Fleury less than 12 minutes into the game after he allowed four goals.
The win is also significant for head coach Mike Sullivan as he became the franchise's all-time leader in victories with 253, passing
Story of the game
It didn't take Pittsburgh long to get on the board as they scored just 15 seconds into the game. Seth Jones dove and took himself off his skates and out of the play, with Fleury left to try to break up the incoming center pass from Teddy Blueger, but the pass hits Jones and flutters past Fleury to give the Penguins a 1-0 lead.
The former Pittsburgh goaltender, in his first year with the Blackhawks, went out to play a puck and not doing so successfully. O’Connor capitalized to record his first career NHL goal with the net practically empty to double the Penguins' lead.
O'Connor was involved in the third goal as he used his speed to collect the puck and start a two-on-one, Chicago defenseman Riley Stillman getting caught in proverbial no-man's-land. O'Connor slid the puck over to Brock McGinn and he one-timed the puck past Fleury.
Just 26 seconds later, on the very next shift, Marcus Pettersson lifted the stick of a Blackhawk to prevent a shot on goal. The puck goes the other way with Jeff Carter entering the zone and sending to Jake Guentzel. He pulled up and hit Danton Heinen with a pass and his high shot across Fleury’s blocker to made it 4-0.
Fleury was pulled from the game, replaced by and the period ended with the Penguins outshooting the Blackhawks 13-3.
Chicago did get on the board after a Zach Aston-Reese penalty as Patrick Kane tallied his first goal of the season, beating Jarry with a one-time slap shot from the right.
The two teams traded a pair of power plays, including Brian Boyle getting rung up for a double minor to negate a Pittsburgh power play, but neither side was able to capitalize.
Later, on a six-on-five ensuing power play call for the Pens on the whistle, Jason Zucker swatted a backhander into the net to clean up a Kasperi Kapanen rebound to make it 5-1 Pittsburgh.
That was the only significant action of the middle 20 minutes as the Blackhawks had 15-8 advantage in shots, 21-18 to Pittsburgh overall as the hosts were in command heading into the third.
With 4:03 remaining, Chicago got a consolation goal as a lazy play off the wall by Heinen turns the puck over at a bad spot in the defensive zone, and Brandon Hagel moves the puck over for Kirby Dach to chip it past Jarry.