That has been the case since Murray made his NHL debut Dec. 19, 2015. At that time, starting goalie Marc-Andre Fleury was out with a concussion.
Murray went 9-2-1 with a 2.00 GAA and a .930 save percentage in 13 regular-season games and 15-6 during the 2016 Stanley Cup Playoffs to help the Penguins win the Stanley Cup.
He started the 2016-17 season as the Penguins' No. 1 goalie and led Pittsburgh to a second consecutive championship.
Fleury was Murray's backup for most of the two championship runs and was selected by the Vegas Golden Knights in the 2017 NHL Expansion Draft. But he's kept tabs on Murray from afar.
"I think Matt's always very relaxed, always focused," Fleury said. "And very mature for his age too. I think he's also very consistent. Every night you know what you're getting from him. That's what makes him a good goalie throughout the regular season."
Murray's demeanor has been praised through his five NHL seasons. His tendency to minimize teammates' mistakes is just as prominent, Sullivan said.
That's been especially true this season. Saturday will be the ninth straight game the Penguins have played without forwards Evgeni Malkin (lower body) and Alex Galchenyuk (lower body). Defenseman Brian Dumoulin (lower body) is expected to miss his fourth straight game. The Penguins also have been without forward Nick Bjugstad for the last nine games because of a lower-body injury, but he could play against the Stars, as could forward Bryan Rust, who has been out all season because of an upper-body injury.
"As I've said, it's hard to win in this League if you don't get a key save at a key time during the course of a game," Sullivan said. "Matt has provided that for us."
One of those timely saves came against the Stars at PPG Paints Arena on Oct. 18. With the Penguins leading 3-2, Dallas forward Joe Pavelski redirected a wrist shot from defenseman Andrej Sekera. Murray slid to his right, tracking Sekera's shot, and then kicked out his left pad to get a toe on the deflection.
The puck went off the post with 1:08 remaining in the third period, and Penguins defenseman Jack Johnson cleared it. Kris Letang scored into an empty net with 22 seconds left to cap a 4-2 win.