The Golden Knights are also six points behind the Los Angeles Kings for third in the Pacific Division and four behind the Nashville Predators, who hold the first wild card from the Western Conference. The Kings have two games remaining and the Predators three. Los Angeles will clinch if Dallas wins in any fashion. Nashville will clinch if Dallas wins in regulation.
"It's not going to be easy here these last three games," Pacioretty said. "We've got to play to the very end and give ourselves a chance."
The Stars lost three straight games in regulation before a 3-2 win against the Seattle Kraken on Saturday.
The Golden Knights are coming off a 5-4 shootout loss to the San Jose Sharks on Sunday, when they gave up the tying goal with 0.9 seconds left in the third period, costing them a point.
Rookie goalie Logan Thompson started against the Sharks and likely will start against the Stars. The Golden Knights announced Monday that Robin Lehner will have shoulder surgery and is out the remainder of the season, and called up Jiri Patera from Henderson of the American Hockey League.
Thompson, named the most outstanding goalie in the AHL in the 2020-21 season, is 9-5-1 with a 2.64 goals-against average, .917 save percentage and one shutout in 16 games (14 starts) this season.
"He's not a young goalie," Golden Knights coach Peter DeBoer said. "He's not a 20-year-old. He's 25. He's won the best goaltender in the American League. So he's been in situations like this where you lose and you've got to bounce back the next night. I'm not worried about him."
DeBoer said he isn't worried about the Golden Knights in general. Vegas is 8-2-0 against Dallas in the regular season and won the last game 5-4 at T-Mobile Arena on Dec. 8, coming back after falling behind 3-1 and pulling Lehner in the second period.
"I'm really confident," DeBoer said. "We're going to need to be great, and I think we've got another level we can get to here [Tuesday] in Dallas."