BOSTON -- Sometimes the latest addition to the lineup winds up making the biggest impact.
That's what Boston Bruins forward Matt Fraser did Saturday night after he was inserted to replace injured center David Krejci right before game time.
In his first game since Oct. 18, Fraser scored his first two goals of the season 1:28 apart to break a tie game in the second period, and the Bruins went on to win their second in a row by defeating the Ottawa Senators 4-2 at TD Garden.
Fraser had no points in four games this season and three goals in 31 career NHL games before Saturday. He was a healthy scratch five games in a row.
"For me you show up to the rink every day no matter if it's practice or a game, and you prepare yourself to play and you prepare yourself to work hard," Fraser said. "There's a lot of long days at the rink. It's maybe not as easy, but when it comes down to it this is what my job is, and whether I'm playing or not, I've got to do my part and you've got to prepare yourself."
Krejci, who has nine points in nine games this season, didn't practice Friday. He took the pregame warmup Saturday after coach Claude Julien had earlier said Krejci was ready to play. But when the game started, Fraser was in and Krejci was out.
"Yeah, that's why he was out for warmups because I thought he was going to play," Julien said. "He came in and we decided as a group that he wasn't well enough to go."
Julien offered no other update on Krejci's health or status for upcoming games.
Goaltender Tuukka Rask stopped 27 of 29 shots for the Bruins, who also got goals from Brad Marchand and Dennis Seidenberg. Despite playing with three recent call-ups from Providence of the American Hockey League on their back end, the Bruins have limited their past two opponents to a total of four goals.
"I think us being a little more poised with the puck," Seidenberg said about the defensive improvement. "Making it a bit easier for the forwards to break the puck out with speed and attacking with speed. And that was the last couple games better, and hopefully it keeps going that way."
The Senators have one win in their past five games (1-2-2). Goaltender Robin Lehner, two days after he was excused to attend the birth of his son Lennox, made 26 saves. Forwards Mika Zibanejad and Mark Stone scored the Senators' goals.
Ottawa defenseman Erik Karlsson was minus-4.
"Well it's a long season, and he's not going to be great every night, as much as we like him to be," Senators coach Paul MacLean said. "But at the same time, I don't think he was out there by himself either. So, I mean, he had opportunities with the puck that ended up in the net a couple times. But he's going to also have opportunities with the puck where he's going to make things right for us. But tonight, we're not very pleased obviously with the outcome of it, and we've just got to come back again and be ready to start playing again Monday."
Fraser took over in the second period, which started with the score 1-1. He scored on a one-timer from the right dot at 11:14 after Carl Soderberg's shot from the left circle rebounded off Lehner toward Fraser.
The Bruins doubled their lead on Fraser's second goal. This time Soderberg chipped the puck ahead to Fraser, who kept the puck on a 2-on-1 and roofed a wrist from the bottom of the left circle at 12:42 for a 3-1 lead. The Bruins went to the dressing room with that lead.
Seidenberg scored a goal at 2:08 of the third to put the Bruins ahead 4-1. Zibanejad scored for Ottawa at 15:43.
Marchand continued his hot hand from Thursday by opening the scoring with a goal at 18:54 of the first period. Marchand, who scored two goals against the Buffalo Sabres two nights ago, beat Lehner through the five-hole with a wrist shot from the top of the left circle after center Patrice Bergeron beat David Legwand clean on a left-dot faceoff.
The Senators evened the score with 28 seconds remaining in the first. Seidenberg pinched down the left wall to keep Dougie Hamilton's shot around the boards in the Ottawa zone. Seidenberg had a clear path to the puck were it not for linesman Brian Murphy being in the way. Stone took advantage of Seidenberg's fumble around Murphy, grabbed the puck and skated on a 2-on-1 against Hamilton. Stone kept the puck and tucked a shot behind Rask to tie the score 1-1.
Seidenberg said Murphy apologized.
"Yeah, he said he didn't know where to go," Seidenberg said. "I would've kept the puck in obviously. But he said he didn't know where to go and he kind of messed me up, and it ended up in a bad break. But stuff like that happens, and thank God we didn't let it affect our game and we kept going."
The Senators will start a four-game homestand Tuesday against the Detroit Red Wings. The Bruins homestand continues that night against the Florida Panthers.