DALLAS — Radek Faksa broke a tie in his return to the Dallas lineup, 20-year-old Wyatt Johnston scored in another Game 7 and the Stars defeated the defending Stanley Cup champion Vegas Golden Knights 2-1 on Sunday night to wrap up the first-round series.

After being out because of an undisclosed injury since leaving the bench late in Game 2, Faksa scored 44 seconds into the third period with a backhander from the circle to the left of goalie Adin Hill.

“It was a huge relief,” Faksa said on the TNT postgame show. “It was the biggest goal of my career. … I promised [my son] I would score a goal tonight, and I’m glad I did.”

Dallas goalie Jake Oettinger had 21 saves in his second Game 7 victory. He also had the Stars’ only penalty, though they killed that off after he was called for tripping Ivan Barbashev in front of the net midway through the third.

“The last period was a clinic. Just so proud of the guys of how we responded,” Oettinger said. “It’s a long playoffs, and you’re going to need different guys to step up at different times. A lot of hockey left, so hopefully a lot more heroes. It’s going to be a run ride.”

The Stars, the No. 1 seed in the West, move on to play well-rested Colorado in the second round with the first two games in Dallas. The Avalanche wrapped up their series against Winnipeg with a Game 5 victory Tuesday night.

Brett Howden scored for Vegas, which couldn’t pull off another series winner in Dallas, where last year the Knights wrapped up the Western Conference finals with a win in Game 6. Hill had 22 saves in his third game of this series after Logan Thompson started the first four.

The visiting team won the first four games in this series until the home teams held serve the last three.

Dallas has won Game 7s in each of its first two postseasons for coach Pete DeBoer, who is now 8-0 in his career in such games with four different teams. That includes the Knights’ only Game 7 wins in 2020 and 2021 when he was their coach.

Johnston scored his series-high fourth goal on a wrister from the top of the slot with 5:26 left in the first period after picking off a clearing pass by Shea Theodore that his teammate, Tomas Hertl, missed when taking a twisting swipe at it.

“It was so much fun,” Johnston said in his postgame interview on Bally Sports Southwest. “It’s what we all grew up dreaming about. As hockey players, you want to play in Game 7s. And there was so much energy in the building.”

A day after his 20th birthday last year, Johnston became the youngest player in NHL history with a game-clinching goal in a Game 7. He gathered a puck that ricocheted off the back boards in the third period of the Stars’ 2-1 win over Seattle in that second-round series.

The goal Sunday came in quick succession after Vegas had two scoring chances. Oettinger made a tough save to deny Jack Eichel and Jonathan Marchessault, then shot the rebound off the left post, and got a hit on Johnston before the Dallas youngster skated to the other end and scored about 10 seconds later.

Vegas, which returned 22 of its 27 players from the Stanley Cup-winning roster, tied it in the second period when Michael Amadio made a crossing pass to Howden, who poked the puck into the open left side of the net behind Oettinger.

The only coach other than DeBoer to win eight Game 7s is Darryl Sutter, who was 8-3 in such games over 182 playoff games in 15 postseasons with four teams.

The Knights are 2-2 in Game 7s. DeBoer was also the opposing coach in their other loss, to San Jose in 2019.

It was only the second time of 16 that the Stars won a best-of-seven series after losing the first two games. The other was the very first playoff series in franchise history, when the Minnesota North Stars were down 0-2 before beating the Los Angeles Kings in seven games to open the 1968 playoffs.

The Associated Press contributed to this report.