Alexander Semin scored on the power play with 1:17 left in the second period to give the Washington Capitals a 2-1 lead over the Boston Bruins after two periods of play in Game 4 of the Eastern Conference Quarterfinals.

With Patrice Bergeron in the penalty box for hooking, Semin took a pass from Keith Aucoin below the goal line. He circled out to the left face-off circle and fired a wrist shot over the left shoulder of Tim Thomas.

The one-goal lead is the fourth the Caps have had in this series during the run of play. Each of the previous three times, the Bruins have come back to tie the score.

Boston still has the edge in shots on goal, 32-18, and will look to rally to take a 3-1 series lead.

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.