The 33-year-old's time in Vegas got off to a rough start. He sustained a lower-body injury in the third game of season and missed the next 30 games.
But since returning on Dec. 14, Stastny has 12 points (six goals, six assists) in 15 games and Vegas, which started the season 9-12-1, is 11-2-2 in that stretch.
"Just a consistent guy that plays the game the right way, face-offs, kills penalties, plays power play, does everything for us," Golden Knights coach Gerard Gallant said. "We missed him for two and a half months. But lately he's been real, real good ... and he's a part of our turnaround after the first 25 games."
Stastny, who has 659 points (226 goals, 433 assists) in 842 NHL games for the Golden Knights, Jets, Blues and Colorado Avalanche, said the fit with the Golden Knights is proving to be a good one.
"I faced a little adversity at first with an injury, but I've come back ... and the team's finally finding a groove," he said. "Everything that we thought would be a good fit for me turned out good."
Gallant said any talk of last season's conference final means nothing to him, "I'm worried about this year's team," he said.
Jets goalie Connor Hellebuyck is using what happened last year and the play of Fleury, who is 6-1-0 with a 1.72 goals-against average, a .935 save percentage and one shutout in his past seven games, as motivation.
"Obviously we want another crack at them," Hellebuyck said. "They beat us pretty cleanly in five games and they're pretty hot right now and Fleury is playing phenomenal, as he always does. It's a team to beat right now."