Sean Kuraly scored to break a third-period tie and assisted on another goal to help the Boston Bruins rally from a two-goal deficit and beat the St. Louis Blues 4-2 on Monday night in Game 1 of the Stanley Cup Final.

Tuukka Rask stopped 18 shots for Boston, which fell behind 2-0 on goals from Brayden Schenn and Vladimir Tarasenko. But the Bruins outshot the Blues 18-3 in the second period — and 38-20 in the game — to take the opener in the best-of-seven series.

Brad Marchand added an empty netter to clinch it.

Boston Bruins' Charlie McAvoy, right, celebrates his goal against the St. Louis Blues with Marcus Johansson, left, during the second period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)
Boston Bruins’ Charlie McAvoy, right, celebrates his goal against the St. Louis Blues with Marcus Johansson, left, during the second period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)

Forty-nine years after Bobby Orr flew through the air following his Cup-clinching goal against St. Louis in the 1970 final, Boston defensemen Connor Clifton and Charlie McAvoy scored in the second period to tie it.

Jordan Binnington made 34 saves for the Blues, who haven’t been back to the final since then. Game 2 is Wednesday night.

It had been 17,914 days since the Blues’ last appearance in the Stanley Cup Final, when they lost to Orr’s Bruins in four games.

Boston Bruins' Torey Krug (47) and St. Louis Blues' Robert Thomas (18) crash to the ice during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
Boston Bruins’ Torey Krug (47) and St. Louis Blues’ Robert Thomas (18) crash to the ice during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)

They ran into a familiar problem: The Boston defense.

After taking advantage of Boston’s slow start — the Bruins hadn’t played since sweeping the Carolina Hurricanes in the conference final on May 16 — St. Louis jumped to a 2-0 lead.

Schenn made it 1-0 lead midway through the first period on a third-chance shot. In the first minute of the second, David Pastrnak got sloppy behind the Bruins’ net and Schenn was there again, this time to pass it to Tarasenko in the slot to make it 2-0.

St. Louis Blues' Brayden Schenn, left, celebrates his goal with Vladimir Tarasenko, center, and Jay Bouwmeester, right, during the first period in Game 1 of the NHL hockey Stanley Cup Final against the Boston Bruins, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
St. Louis Blues’ Brayden Schenn, left, celebrates his goal with Vladimir Tarasenko, center, and Jay Bouwmeester, right, during the first period in Game 1 of the NHL hockey Stanley Cup Final against the Boston Bruins, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)

But just 76 seconds later, Clifton tipped in a pass from Kuraly to cut the deficit to one goal. And in the middle of the second, on the Bruins’ fourth power play of the game, McAvoy came right up the middle and wristed it past Binnington’s glove to tie it.

It was still tied five minutes into the third when Noel Acciari, on Binnington’s left, made a spin move and swept the puck across the crease to Kuraly. He steadied it with his skate and then poked it in with his stick to give the Bruins their first lead of the game.

The crowd, which had previously been most excited to see the 2011 champions waving banners before the game, began a chant of “Let’s Go Bruins!” Although David Krejci’s penalty quieted the building, it came back to life when Torey Krug, angry over a scuffle with David Perron in front of the St. Louis net, sped down the ice helmetless and flattened Robert Thomas.

Boston Bruins' Danton Heinen (43) carries the puck in front of St. Louis Blues' David Perron (57) during the first period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
Boston Bruins’ Danton Heinen (43) carries the puck in front of St. Louis Blues’ David Perron (57) during the first period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)

After the whistle, fans chanted “We want the Cup!”

Notes: Lil Nas X and Chase Rice, who performed a concert in City Hall Plaza before the game, were in attendance. They both got big cheers when shown on the video board, and the crowd erupted when Rice chugged a beer. … Members of the Bruins 2011 Stanley Cup championship team took part in pregame banner ceremonies. Five players on the current roster were on that team: Rask, Patrice Bergeron, Brad Marchand, David Krejci and Zdeno Chara. … The Blues scored the first goal for the 14th time in 20 playoff games. They had been 10-3 when scoring first, and 6-1 when leading after the first period. … Blues D Vince Dunn missed his fourth straight game with an unspecified injury. … Binnington stopped 83 of the previous 85 shots he faced through one period, dating back to Game 4 of the Western Conference finals.

UP NEXT

Boston Bruins fans celebrate their team's goal against the St. Louis Blues during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)
Boston Bruins fans celebrate their team’s goal against the St. Louis Blues during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)

The Bruins would be halfway to their seventh NHL title with victory on Wednesday night at home. It would be their first since 2011. They lost to Chicago in the 2013 final.

___

Boston Bruins fans celebrate their team's goal against the St. Louis Blues during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)
Boston Bruins fans celebrate their team’s goal against the St. Louis Blues during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)
St. Louis Blues players on the bench watch Boston Bruins' Brad Marchand, front, celebrate his empty-net goal during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
St. Louis Blues players on the bench watch Boston Bruins’ Brad Marchand, front, celebrate his empty-net goal during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
St. Louis Blues' Ivan Barbashev, top, of Russia, trips over Boston Bruins' Torey Krug during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
St. Louis Blues’ Ivan Barbashev, top, of Russia, trips over Boston Bruins’ Torey Krug during the third period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
A puck shot by St. Louis Blues' Vladimir Tarasenko, of Russia, sails past Boston Bruins goaltender Tuukka Rask (40), of Finland, for a goal during the second period period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (Bruce Bennett/Pool via AP)
A puck shot by St. Louis Blues’ Vladimir Tarasenko, of Russia, sails past Boston Bruins goaltender Tuukka Rask (40), of Finland, for a goal during the second period period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (Bruce Bennett/Pool via AP)
Linesman Greg Devorski separates St. Louis Blues' Joel Edmundson (6) and Boston Bruins' David Backes (42) during the second period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)
Linesman Greg Devorski separates St. Louis Blues’ Joel Edmundson (6) and Boston Bruins’ David Backes (42) during the second period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)
Boston Bruins' Charlie McAvoy jumps into the endboards to celebrate his goal against the St. Louis Blues during the second period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
Boston Bruins’ Charlie McAvoy jumps into the endboards to celebrate his goal against the St. Louis Blues during the second period in Game 1 of the NHL hockey Stanley Cup Final, Monday, May 27, 2019, in Boston. (AP Photo/Charles Krupa)
Boston Bruins' Connor Clifton, center, celebrates his goal with Matt Grzelcyk, left, and Noel Acciari, right, during the second period in Game 1 of the NHL hockey Stanley Cup Final against the St. Louis Blues, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)
Boston Bruins’ Connor Clifton, center, celebrates his goal with Matt Grzelcyk, left, and Noel Acciari, right, during the second period in Game 1 of the NHL hockey Stanley Cup Final against the St. Louis Blues, Monday, May 27, 2019, in Boston. (AP Photo/Michael Dwyer)