PITTSBURGH — The Montreal Canadiens used a systematic approach to frustrate and shut down the Pittsburgh Penguins’ star-studded attack.

Paul Byron scored two goals and added an assist, leading the Canadiens to a 5-1 victory over the Penguins on Saturday night.

“Our plan was just to skate and forecheck relentlessly,” Byron said. “When you give (the Penguins) space to skate, they’re going to make plays all night. But when you close lanes, I think that makes it hard for them.”

The Canadiens opened the season with three of four possible points in two road games against Toronto and Pittsburgh. Byron contributed Saturday with his first multi-goal game since scoring a hat trick last December against Detroit.

Brendan Gallagher, Joel Armia and Charles Hudon also scored for the Canadiens, who snapped a five-game losing streak against Pittsburgh. It was Montreal’s first win against Pittsburgh since Al Montoya’s 36-save shutout Oct. 18, 2016.

Carey Price made 21 saves on Saturday for his first win against Pittsburgh since Oct. 13, 2015. Price had plenty of help as the Canadiens blocked 22 shots, one more than he faced.

“It’s definitely huge to get those blocks,” Price said. “A couple of them, especially in the first period, could’ve been a game-changer.”

Riley Sheahan scored for Pittsburgh, which lamented its puck management during a wild season-opening 7-6 overtime win against Washington on Thursday.

Kris Letang, a Montreal native, had an assist and passed Hall of Famer Paul Coffey for most points in team history by a defenseman with 441. Matt Murray, who has allowed 11 goals in two games, made 24 saves in the loss.

“I think we’re a team right now that just wants to score instead of playing the game the right way and that means playing on both sides of the puck,” Penguins’ coach Mike Sullivan said. “Right now, we’re not even close to where we need to be. Until we learn how to play defense and become harder to play against, we’re not going to control outcomes.”

Last season, Pittsburgh scored five goals in each of its three games against Montreal. The Canadiens returned the favor with a five-goal outburst Saturday. The teams will meet again next Saturday in Montreal.

“It’s obviously concerning,” Sullivan said. “You don’t ever want to get outworked. I thought they played harder and smarter. They were hard to play against.”

Gallagher scored the game’s first goal midway through the opening period. Tomas Tatar’s initial shot off the rush hit Penguins’ defenseman Olli Maatta and bounced to Gallagher, who converted the 2-on-1.

Byron’s breakaway goal gave the Canadiens a 2-0 lead later in the period. He beat Maatta at the blue line and tucked a backhand-forehand deke between Murray’s outstretched pad and the post.