ST. LOUIS — Matt Murray returned to the lineup Dec. 15, rejuvenated after missing 13 games with a lower-body injury.

What a spark he’s provided for the Pittsburgh Penguins.

Murray made 30 saves and Sidney Crosby had a goal and three assists to lead the surging Penguins past the St. Louis Blues 6-1 on Saturday night.

“I’m just trying to get better as I go here,” Murray said. “I think everything is going in the right direction and I just need to stay focused on what’s important.”

Juuso Riikola, Zach Aston-Reese, Kris Letang, Jake Guentzel and Evgeni Malkin also scored for the Penguins, who converted on all four power plays. Pittsburgh has won a season-best five consecutive games.

Murray improved his record to 9-5-1. He has won five straight starts since coming back.

“I think that he’s making key saves and ones you don’t always expect him to make, ones that look like they’re maybe really good chances,” Crosby said. “