Michael Amadio had a goal and assist, and Drake Batherson also scored for the Senators (2-0-0). Linus Ullmark made 10 saves through two periods but was removed to the start the third as a precaution after a collision with Bruins forward JJ Peterka in the crease late in the second period.
“He kind of tweaked something, a little bit,” Ottawa coach Travis Green said. “So, precautionary. We just felt best it best if we bring him out, get evaluated again.”
Samuel Ersson, acquired in a trade with the Toronto Maple Leafs on June 26, made eight saves in his Senators debut.
James Hagens scored his second NHL goal, and Jeremy Swayman finished with 20 saves for the Bruins (2-2-0).
“We dropped the ball at home today,” Boston defenseman Nikita Zadorov said. “Didn’t come ready to play today, we can see it from the first minute of the game. I don’t know why.”
The Bruins went 0-for-4 on the power play and are 0-for-10 through four games.
“Obviously a lot has to do with confidence,” Boston captain David Pastrnak said. “We just have to find it. We proved that we can be a good power play last year, so we just have to get back to it. I think mainly it’s the confidence.”
When asked why his team is having difficulty scoring on the man-advantage, Boston coach Marco Sturm said, “It’s a good question. I really don’t know. I can’t give you an answer right now -- honestly. We thought putting those guys back together because they had good chemistry, and we were a top 10 power play last year, (would) give them a little bit of comfort, but it kind of went the other way.
“Honestly, I have no idea why. I really don’t. I’ve got to look at some clips. As a group, you have to ask yourself, too, the guys who were on the ice on the power play, and as a group we have to get better.”
Stutzle scored twice in a span of 1:43 for a two-goal lead.
He put Ottawa ahead 1-0 with a short-handed goal at 7:39. Boston mismanaged the puck in the offensive zone, and Amadio intercepted a pass to quickly create a 2-on-1. Stutzle then received a backhand feed at the right hash marks and beat Swayman with a one-timer high to the stick side.
“Right from the drop of the puck we came ready to play,” Amadio said. “It was a good 60 minutes from our team and we’ll get ready to go (at the Detroit Red Wings on Tuesday).”