BUFFALO, N.Y. — David Pastrnak scored on a breakaway 9:14 into overtime, and the Boston Bruins avoided elimination with a 2-1 win over the Buffalo Sabres in Game 5 of their first-round playoff series on Tuesday night.

Catching Buffalo on a line change, Hampus Lindholm fed a pass up the right boards to find Pastrnak in stride just as he crossed the blue line. Driving in alone on net a step ahead of Buffalo’s Mattias Samuelsson, Pastrnak faked cutting across the front and nearly lost his balance before slipping the puck inside the right post.

The series shifts back to Boston for Game 6 on Thursday night, with Buffalo still seeking to clinch its first playoff series victory since eliminating the New York Rangers in six games in a 2007 second-round series. The Sabres are in the playoffs for only the third time since, and after snapping an NHL-record 14-season playoff drought this year.

Elias Lindholm also scored for Boston, which overcame a 1-0 deficit. Jeremy Swayman stopped 25 shots, including foiling Jason Zucker in front 3:30 into the extra period.

Rasmus Dahlin scored for Buffalo and Alex Lyon stopped 27 shots.

Lindholm tied it 9:24 into the second period after his bad-angle shot bounced into the slot. He got to the loose puck first and, with his back to the net, spun around and fired in a low shot through a crowd.

Dahlin opened the scoring 3:35 with his first playoff goal, and Buffalo’s first power-play goal in nearly a month. Driving up the left wing, Zucker’s initial pass attempt was blocked before he recovered the puck and fed Dahlin for a one-timer in the right circle.

The Sabres had gone 0 of 17 with the man advantage this series, and entered the playoffs failing to convert 22 straight chances, dating to a 4-3 win over the New York Islanders on March 31.

The Bruins played without second-line forward Viktor Arvidsson, who was hurt in the first period of Game 4 on Sunday.