The Senators were less than two minutes away from a huge win over defending Stanley Cup champion New Jersey on Saturday. But they didn't get the job done as the Devils scored twice late, including the game-winner with 18 seconds remaining in an eventual 2-1 win.
"It's unbelievable, I don't even know what to say," said Ottawa's Daniel Alfredsson, who extended his point streak to nine games with a goal in the first period. "You can't give up a lead like that and then lose the game. If you want to be a top team you have to be better."
Defenseman Wade Redden's failure to clear the puck out of the Senators' zone resulted in New Jersey tying the game at 18:23.
Redden shouldered much of the blame for the loss.
"We had the game," he said. "It was my mistake that let them get back in it. I didn't get the puck out. We've got to be better. Sure it's hard, but if you've got to get the puck down the ice get it down and protect the front of the net."
The Senators will try to bounce back against the Bruins by taking advantage with their superior special teams. Alfredsson and Radek Bonk are leading the league in power-play points while Boston has one of the worst penalty-killing units in the NHL.
The Bruins have just one win in their last seven (1-3-2-1), but are coming in off a 1-1 tie with NHL-leading Philadelphia on Saturday night.
Boston, which suffered an embarrassing 6-0 home loss to Toronto on Thursday, outshot Philadelphia 15-3 in the opening period.
Sergei Samsonov scored for the first time in 12 games and recorded his first power-play goal this season as the Bruins took a first-period lead.
Andrew Raycroft made 22 saves for Boston, which outshot Philadelphia 39-23.
Winless in their last four at home (0-2-2), the Bruins will be trying to avoid their longest winless streak of the season at the FleetCenter.
Ottawa, which only has three losses on the road, is looking for its fourth straight win away from home.