The Bruins snuck past the Senators in Game 1 with two goals in the third period, and stole a win that gave them the early advantage in the first round playoff series. Boston would still be without top defensemen Torey Krug, Brandon Carlo, and Colin Miller, and second line center David Krejci, but they aimed to establish stellar play in Game 2 and go back home with a two-game advantage.
A little over halfway into the opening period, Drew Stafford was called for tripping that gave Ottawa their first power play opportunity of the game. Only 26 seconds later, Alexandre Burrows was sent to the box for interference, which gave Boston an abbreviated man-advantage on the other side, but neither team capitalized.
After 20 minutes, the game was scoreless. The Bruins had 10 shots on goal, and goaltender Tuukka Rask made nine saves.
The Bruins found the scoreboard first when Drew Stafford put the puck in the back of the net 9:47 into the middle period after assists from David Backes and Zdeno Chara to give them a 1-0 lead.
Just 1:10 later, Clarke MacArthur scored on a power play from Bobby Ryan and Derick Brassard to tie the game at 1-1.
The Bruins got the lead back when Tim Schaller scored a shorthanded goal at 12:39 of the second period after a pass from Dominic Moore to make it 2-1.
With 3:59 remaining in the period, Patrice Bergeron scored on the power play from David Pastrnak and Ryan Spooner to give the Bruins a 3-1 lead.
At the second intermission, the Bruins led by two. They were up to 23 shots, and Rask had made 17 saves.
Ottawa chipped away at the deficit when Chris Wideman scored at 5:28 of the final period after a pass from Dion Phaneuf to make it 3-2.
About two and a half minutes later at 7:48 of the period, Brassard scored from Erik Karlsson and Phaneuf to tie the game at 3-3.
With 13 seconds left in the third period, Chara was assessed a two-minute minor penalty after he lifted the puck out of play for delay of game.
The game remained tied 3-3 after regulation, and the Bruins were up to 29 shots, while Rask had made 23 saves.
After the Bruins had killed off Chara's penalty, the Senators kept the pressure on as Phaneuf scored 1:59 into overtime to get the win, 4-3. The Bruins finished with 29 shots, while Rask made 25 saves.
The series is now tied with one game apiece, and both teams will travel to Boston as the Bruins host the Senators in Game 3 on Monday at 7 p.m. est.