Pat Maroon scored with 1:38 to play in the third period as the Blues gave up leads three times but finally held on to one as they beat the Stars 4-3 in Game 3 on Monday night in Dallas.
The win gave the Blues a 2-1 lead in the Western Conference semifinal. The team is 4-0 on the road this season in the playoffs. There were four goals in 5:16 in the third period. Jordan Binnington stopped 27 of 30 shots he faced.
Maroon cleared space by knocking down Dallas' Esa Lindell, got the puck from Jay Bouwmeester, moved in front of the goal and shot high to beat Dallas goalie Ben Bishop.
Game 4 is Wednesday night in Dallas.
Dallas had a two-man advantage for the final 42.5 seconds after Colton Parayko put the puck over the boards and Dallas pulled Bishop. But the Blues minimized Dallas' chances after that penalty and Binnington had to make only one save.
The Blues came into the third up 2-1, and Dallas tied the game on a short-handed goal by Andrew Cagliano as the Blues bungled a power play and gave up a two-on-one break the other way. But just 1:18 after that goal, the Blues went back ahead on a blast from Alex Pietrangelo from the top of the left circle for his first goal of the postseason.
But just 1:28 after that, Pietrangelo couldn't get the puck out of the Blues zone, Dallas turned it around and Miro Heiskanen centered a pass and Tyler Seguin got position on Carl Gunnarsson and put the puck in with 4:08 to play to tie the game.
A tap in by Tyler Bozak put the Blues up 2-1 on Dallas after two periods.
The goal came at the end of an extended possession by the Blues in the Dallas zone. Vince Dunn kept the puck in at the blueline, skated it low in the zone, passed to Robert Thomas, whose shot was stopped by Bishop, but trickled past him and was sitting just off the goal line when Bozak reached in and tapped the puck in for his second goal of the postseason.
Binnington made 10 saves in the period for the Blues, including one on a breakaway, and another breakaway was stopped by defenseman Gunnarsson, who chased down the play and lifted Cogliano's stick before he could get the shot off.
The Blues had a late chance after a high sticking penalty on Gunnarsson. He forced a turnover after getting out of the box and Bozak had a partial breakaway, but he couldn't get the initial shot off and his subsequent backhand went a couple of inches wide.
Jaden Schwartz scored his sixth goal of the postseason to put the Blues up 1-0 in the first period. The Stars got a power-play goal from Alexander Radulov with 2:48 to go in the period.
Schwartz put the Blues ahead just 1:27 into the game with his sixth postseason goal, tying him for the most so far. Parayko took a shot from the point that Schwartz redirected in. Schwartz's six goals have all come in the past five games. In the regular season, Schwartz needed 46 games to get six goals, not getting it until Feb. 19.
On Radulov's goal, the Blues had a couple chances to clear the puck and couldn't. Jason Spezza centered a pass and Radulov knocked it in.
The Blues had another power play that they didn't do anything, managing just one shot on goal in the two-minute advantage. The Blues went 0 for 5 on the power play in Game 2.
The Blues killed two penalties in the second period and didn't have any power plays.
