The Predators announced on Monday that Vokoun would miss the remainder of the season and postseason because of a blood condition. Vokoun has 36 wins and a 2.67 goals-against average.
"It means a lot," Mason said. "We as a team knew before last game (about Vokoun). But still, it's important for me to have the confidence of our team. They've been playing awesome in front of me since they found out."
With the win, the Predators reached a couple of milestones. Nashville completed a season sweep of the Blues and reached 100 points for the first time in franchise history.
"That's a pretty big number," Nashville coach Barry Trotz said of the point total. "That's a number that shows a team definitely has had a good year."
Mason, who shutout the Blues for the second time in five days at the Savvis Center, said Nashville owed the Blues from when St. Louis would dominate the expansion Predators.
"I mean in years past St. Louis always abused us," Mason said. "It's kind of unheard of to sweep, but they beat us up in years past."
Beating up on the Blues, who have lost 14 of 15, is one thing. Winning in the playoffs is another.
Blues forward Scott Young said it remains to be seen how Mason will hold up when the playoffs start next week.
"The playoffs are a totally different story," Young said. "Mentally, the team has got to deal with the loss of Vokoun and that's going to be a tough thing to do.
"But you never know. Maybe a kid like Mason could shock everyone. A lot of people have written them off because of Vokoun, but you just never know."
Sillinger, traded from the Blues to Nashville on Jan. 29, opened the scoring at 12:15 of the third period when he got the rebound of his own shot from the left circle that took an awkward bounce off the boards. When the puck bounced out front, Sillinger shoved it past Blues goalie Jason Bacashihua for his career-high 29th goal. His previous high was 21 in 1997-98.
Hall added an empty-net goal with 22 seconds left.
Bacashihua made 27 saves for the Blues.
"We can't score," Young said. "If you can't score, you're not going to win."
Neither team generated much offense in the first two periods. Nashville's David Legwand came the closest to scoring when he hit the left post with a wrist shot 3:14 into the second period. The puck bounced out and hit Bacashihua, and he was able to cover the rebound.
St. Louis' best chance came at 12:45 of the second period when Young broke in alone down the right wing, but his wrist shot was turned aside by Mason.
- The Blues went 0-for-6 on the power play and are 0-for-32 with the man advantage in their last five home games.
- Nashville is 22-8-1 vs. the Central Division.
- St. Louis has scored more than two goals once in its last 15 games.