Nicklas Backstrom scored at 2:56 of the second overtime on an assist from Marcus Johansson.
Braden Holtby was tremendous in goal for the Capitals. The Washington youngster stopped 43 of the 44 shots faced in Game 2, giving him 72 saves on 74 shots in the series.
Much maligned Alexander Semin played terrific defensively for the Capitals, particularly in the overtime periods. Fellow Russian Alexander Ovechkin shook off a pedestrian Game 1 to contribute offensively (three shots on goal, one blocked shot) and defensively (five hits) in Game 2.
The Bruins and Capitals will meet again on Monday in Game 3, when the series shifts to the Verizon Center in Washington, D.C.
We'll have plenty more on these games and the rest of the 2012 NHL Playoffs on SB Nation D.C., so keep it locked to this StoryStream for all the latest news and updates. For more news, analysis, and discussion on Capitals hockey, please head over to Japers' Rink. For the opponent's perspective all series, check out Stanley Cup of Chowder. You can also head over to the SB Nation NHL hub page for more on hockey news as the playoffs begin.