OTTAWA -- Sean Kuraly scored at 10:19 of the second overtime, and the Boston Bruins avoided elimination with a 3-2 win against the Ottawa Senators in Game 5 of the Eastern Conference First Round at Canadian Tire Centre on Friday.
The Senators lead the best-of-7 series 3-2 with Game 6 at Boston on Sunday.
It was Kuraly's second goal of the game. Tuukka Rask made 41 saves, and David Pastrnak scored.
[WATCH: All Bruins vs. Senators highlights | RELATED: Complete Boston vs. Ottawa series coverage]
"It feels good," Kuraly said. "Keep the series going and do what we came here to do. It was a good night."
Kuraly was in the lineup after Bruins coach Bruce Cassidy scratched forward Ryan Spooner, who was not 100 percent healthy.
Video: BOS@OTT, Gm5: Kuraly nets two, keeps Bruins alive
"We liked him, but we just put some guys ahead of him that had been here all year," Cassidy said of Kuraly, who played the first two games of the series but was scratched when David Krejci returned for Game 3. "One door closes and another one opens. He kind of took advantage of his opportunities. He started at the bottom of the lineup. Tonight we just needed him more, and he had the energy."
Mark Stone and Jean-Gabriel Pageau scored, and Craig Anderson made 36 saves for the Senators.
All five games in the series have been decided by one goal, three in overtime.
Video: BOS@OTT, Gm5: Pageau goes five-hole on breakaway
Noel Acciari appeared to score the winning goal for Boston at 14:25 of the first overtime but it was disallowed because of goaltender interference on Anderson by Kuraly. The Bruins also had a possible goal reviewed at 15:21 but it was ruled the puck was kept out by Pageau.
Tied 2-2, the Bruins killed two penalties in the last five minutes of the third period: a delay of game to Dominic Moore at 14:52 and too many men on the ice at 17:32.
Boston came back in the second period after trailing 2-0. Pastrnak shot a puck that came loose after a wraparound attempt by Brad Marchand to make it it 2-1 at 8:40. Kuraly scored his first Stanley Cup Playoff goal when he jammed in a puck off Senators defenseman Chris Wideman from below the goal line to Anderson's right to tie it 2-2 at 17:05.
Stone and Pageau each scored on a breakaway. Stone scored at 11:19 of the first period to make it 1-0. Pageau scored 30 seconds into the second with a shot between Rask's pads to give Ottawa a 2-0 lead.
Video: BOS@OTT, Gm5: Pastrnak finishes Marchand's wrap
"Well, right now it definitely stings," Senators defenseman Dion Phaneuf said. "They're emotional games. We expected a hard fought long, grinding, grueling series, and that's what we've got.
"I don't know how to explain it any better than, they're pushing, we're pushing and it goes to double overtime, anything can happen. It's disappointing, but we've got to move on. We expected a battle and we've got one."
Goal of the game
Kuraly, playing his third Stanley Cup Playoff game, scored the game-winner after David Backes' tip was blocked by Erik Karlsson.
"The puck went onto my stick and I passed into the back of the net," Kuraly said. "It was 4-by-6. Those are the good ones. You don't get many of those, but hey, it bounced on my stick tonight and happy that it did."
Video: BOS@OTT, Gm5: Kuraly buries game-winner in 2OT
Save of the game
In the first overtime, Backes pushed a puck in the crease toward the Ottawa goal line. Pageau sprawled and swept the puck away to prevent the goal.
Video: BOS@OTT, Gm5: Pageau keeps loose puck out in OT
Highlight of the game
Mike Hoffman sent Stone in for a breakaway with an aerial pass, and he scored his first goal since Feb. 19 with a deke to the backhand.
Video: BOS@OTT, Gm5: Stone converts on a breakaway in 1st
Unsung performance of the game
Defensemen Zdeno Chara and Kevan Miller were on the ice for 3:30 to help the Bruins kill the two penalties in the final five minutes of the third period.
They said it
"We get over it that and we'll move on. I've said it since the beginning, it's going to be a tough long series and that's exactly what it is." -- Senators coach Guy Boucher
"Originally, yes, but then I saw the replay and I wasn't sure. I guess next time I should just score on the first shot." -- Bruins forward Sean Kuraly after a goal in overtime was disallowed because he interfered with Senators goaltender Craig Anderson
Need to know
Karlsson played a game-high 41:51. Chara led the Bruins at 36:46. … Krejci left the game after colliding with Senators defenseman Chris Wideman. Cassidy said Krejci is day to day with a lower-body injury and will be evaluated Saturday. … Senators forward Viktor Stalberg is day to day, Boucher said.
Game 6 of Eastern Conference First Round at TD Garden on Sunday (3 p.m. ET; NBC, SN, TVA Sports)
Video: Kuraly's two goals lift Bruins to 3-2 win in 2OT