BOSTON (AP) — David Pastrnak had a goal and two assists just a few hours after signing a new contract and the surging Boston Bruins became the fastest team in NHL history to reach 100 points by beating the Buffalo Sabres 7-1 on Thursday night.

Jakub Lauko scored twice, Dmitry Orlov added a goal and two assists and Jeremy Swayman stopped 26 shots as the Bruins overcame the loss of Brad Marchand to a lower body injury to win their ninth straight.

Boston improved to 48-8-5 in its 61st game, besting the Montreal team from 1976-77 that reached 100 points in 62 games. The Bruins are on pace to surpass that Canadiens club for most points (132) in a season.

Pavel Zacha, Patrice Bergeron and Connor Clifton added goals for Boston.

Casey Mittelstadt scored for Buffalo and Ukko-Pekka Luukkonen stopped 35 shots But his unusual tripping penalty led to Orlov’s power-play goal and turned the game as the Sabres dropped their second straight.

The victory capped an eventful day for the Bruins. They acquired Tyler Bertuzzi from Detroit and inked Pastrnak to an eight-year, $90 million extension.

“Probably took a little longer than we hoped for, but we finally got across the finish line,” Boston president Cam Neely said. “We’re thrilled to have him for another eight years.”

Pastrnak drew the odd penalty against Luukkonen in the second period and then assisted on the ensuing goal. He scored his 43rd goal in Boston’s five-goal third period that also saw him earn his 40th assist.

Bertuzzi, called a good “sandpaper” guy by coach Jim Montgomery, will help fill the roles of fellow wingers Taylor Hall and Nick Foligno. Hall was placed on long-term injured reserve and Foligno regular IR.

Last week, GM Don Sweeney picked up Orlov and Garnet Hathaway in a deal with Washington. Orlov has been dominant in four games since joining Boston.

“We’re going to be a tough out come the playoffs,” Montgomery said.

A lengthy absence by Marchand would hurt Boston, however. He took a big hit in the second period and didn’t return for the third.

The Sabres, who lost top-line forward Alex Tuch (lower body) last week, again played without banged-up top defenseman Rasmus Dahlin. He was was placed on injured reserve, retroactive to Friday, opening a roster spot for defenseman Riley Stillman, acquired Monday from Vancouver.

Stillman made an immediate impression, recording five hits in a scoreless first period.

And it remained deadlocked until Luukkonen was called for tripping as Pastrnak tried to beat him while skating in alone.

Orlov scored on a one-timer on the ensuing 4-on-3 and Lauko knocked in a fat rebound 1:26 later to make it 2-0.

Buffalo, in a scramble for one of the last playoff spots in the Eastern Conference, couldn’t recover.

NOTES: Sweeney said Hall and Foligno are unlikely to return before the end of the regular season. … Bertuzzi was expected to arrive in Boston late Thursday. … Sweeney doesn’t anticipate making another deal before Friday’s trade deadline. … The Sabres traded F Anders Bjork to Chicago for future considerations. … The Bruins recognized Buffalo firefighter Jason Arno during a first period timeout. Arno died in a fire Wednesday.


Sabres: Host Tampa Bay on Saturday.

Bruins: Host the New York Rangers on Saturday.

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