Boston hasn't lost since April 30.
The Bruins came back from two goals down to defeat the Blues 4-2 in Game 1 on Monday, when they held St. Louis to 12 shots on goal in the final two periods, including three in the second.
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"Once you see the video and see what we actually did and know that we didn't get to our game or play our game at all, it makes us feel confident in the room that we can turn the page, get back to playing the way we can, and hopefully that will lead to a win tonight," Blues center Brayden Schenn said.
Since 1939, when the Cup Final went to a best-of-7 format, teams that have a 2-0 lead have won the Stanley Cup 90.2 percent of the time (46 of 51). However, the Pittsburgh Penguins in 2009 and the Bruins in 2011 overcame being down 2-0 to win the Stanley Cup.
Here are 5 keys to Game 2:
1. A bit better Binnington
Blues goalie Jordan Binnington wasn't the reason St. Louis lost Game 1. He made 34 saves on 37 shots.
However, Binnington blamed himself for not catching the floating wrist shot from Bruins defenseman Zdeno Chara, a fumble that led to forward Sean Kuraly's goal at 5:21 of the third period that gave Boston a 3-2 lead.
Binnington is 5-2 with a 1.84 goals-against average and .937 save percentage after a loss in the Stanley Cup Playoffs, including 2-0 with a .946 save percentage (three goals on 56 shots) against the San Jose Sharks in the Western Conference Final.
"He's a guy who doesn't get rattled, just focuses on the next task," Blues center Tyler Bozak said. "He'll be ready to go."
2. Bruins' top line looking for more
Boston's top line of Patrice Bergeron, Brad Marchand and David Pastrnak wasn't dangerous in Game 1, and it struggled in its initial matchup against St. Louis' top line of Schenn, Jaden Schwartz and Vladimir Tarasenko.
Video: STL@BOS, Gm1: Marchand seals win with empty-net goal
Puck management was the biggest problem, and that's why Bruins coach Bruce Cassidy moved away from that matchup after Pastrnak's turnover led to Tarasenko's goal at 1:00 of the second period.
Boston's fourth line of Kuraly, Joakim Nordstrom and Noel Acciari took over and shut down St. Louis' top line.
Cassidy said he could go back to Bergeron's line against Schenn's line in Game 2, but he also felt they played better after they got away from the matchup. It'll be interesting to see how it plays out, but the Bruins could use a big night from their big guys.
3. Blues' forecheck must be a factor
The Blues rely on their forecheck as a big part of jump-starting their game to create turnovers and generate offense. Their forecheck was almost nonexistent in Game 1, especially in the final two periods. The Bruins instead were able to generate clean breakouts and easy zone entries.
If the Blues want to put the Bruins on their heels and play a punishing game, they have to get their forecheck going early in Game 2.
"The way we play hockey, it's not pretty, it's not flashy," Schenn said. "It's a lot of chip and chasing, grinding and forechecking. That's what we've got to get to tonight."
4. Boston's D up in rush
The Bruins recognized in Game 1 that the Blues' were sitting back instead of attacking, and they responded by having their defensemen push up in the rush when the opportunity presented itself. That's how Connor Clifton scored his goal at 2:16 of the second period to make it 2-1.
If the Blues want to play that way again, the Bruins defensemen should again be aggressive.
"We've talked all playoffs long about us setting the pace back there and it starts with our breakouts," Boston defenseman Torey Krug said. "When we're able to be clean out of our zone it allows us to set up that next wave of attack, so it's definitely a key for us."
Video: News and notes ahead of a pivotal Game 2 of the SCF
5. Blues need composure, discipline
The Blues can't give the Bruins five power-play opportunities in Game 2 if they want to get even in the series.
"No-brainer," Schenn said. "They've got a good power play, so that's crucial."
Boston's power play was ragged at times in Game 1, but give it five chances, and odds are it will connect. Bruins defenseman Charlie McAvoy scored on Boston's fourth power play to tie the game 2-2 at 12:41 of the second period.
The Bruins are 32.7 percent on the power play in the playoffs (18-for-55), including 40.0 percent (8-for-20) in the past five games, with at least one power-play goal in each game.
Blues projected lineup
Jaden Schwartz -- Brayden Schenn -- Vladimir Tarasenko
Sammy Blais -- Ryan O'Reilly -- David Perron
Pat Maroon -- Tyler Bozak -- Robby Fabbri
Ivan Barbashev -- Oskar Sundqvist -- Alexander Steen
Joel Edmundson -- Alex Pietrangelo
Jay Bouwmeester -- Colton Parayko
Carl Gunnarsson -- Robert Bortuzzo
Scratched: Michael Del Zotto, Zach Sanford, Mackenzie MacEachern, Chris Thorburn, Ville Husso
Injured: Vince Dunn (upper body), Robert Thomas (undisclosed)
Bruins projected lineup
Brad Marchand -- Patrice Bergeron -- David Pastrnak
Jake DeBrusk -- David Krejci -- David Backes
Marcus Johansson -- Charlie Coyle -- Danton Heinen
Joakim Nordstrom -- Sean Kuraly -- Noel Acciari
Zdeno Chara -- Charlie McAvoy
Torey Krug -- Brandon Carlo
Matt Grzelcyk -- Connor Clifton
Scratched: John Moore, Steven Kampfer, Karson Kuhlman
Injured: Chris Wagner (upper body), Kevan Miller (lower body)
Thomas will miss his first game of the playoffs. Berube said he decided Tuesday that Thomas wasn't going to play, but his injury is not related to the hit he took from Krug in the third period of Game 1. Thomas has been dealing with an undisclosed injury since the conference final. Fabbri was skating in his place on the third line with Bozak and Maroon in the morning skate, but Berube wouldn't confirm he would be in, saying that will be a game-time decision.
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