The second period started with the Bruins holding on by a thread.
Vladimir Sobotka went to the penalty box at 2:22 for a hooking penalty. Out came one of the best penalty killing tandems in the league in the form of Daniel Paille  and Steve Begin along with defensemen Zdeno Chara  and Dennis Seidenberg . Normally a team will role out two penalty killing units on a power play with the first unit the best killers and the second unit efficient killers who can create an odd-man break when given the opportunity.
Boston never got the second unit on the ice.
It was more like Pittsburgh never let them off the ice. The full two minutes was spent in Boston’s defensive zone as the Penguins  rained shots on Tuukka Rask . The young goaltender was up to it and proved to be the best penalty killer the Bruins had on the shift even as Pittsburgh dumped 10 shots on net (to the Bruins zero) in the first five minutes of the period.
Boston got its third chance on the power play at 7:37 when Sergei Gonchar took at tripping call. Once again the Bruins mustered next to nothing.
The second fight of the night broke out at 11:53 when captain Zdeno Chara went toe-to-toe with center Michael Rupp right after a face off. Chara got the best of Rupp in the captain’s first official fight of the season.
Seven-seconds after Chara went to the box, fellow defenseman Mark Stuart  joined him with a hooking penalty at 12:00. That left the Bruins without two of their top three defensemen for an extended period of time. Once again, Rask stepped up and killed the penalty for the Boston.
The third time was the charm though. Pittsburgh got another shot on the power play at 17:44 when Steve Begin went for “kneeing” (a trip, more or less). Pittsburgh went through the normal routine — set up camp in the Boston zone, cycle, shoot, rebound, cycle, shoot. Right after the penalty ended the puck ended up on the stick of Kris Letang at the top of the left circle. He shot and it was deflected five-hole through Rask by Alexei Ponikarovsky for the two-goal lead.
Shots through second (total):
Bruins — 5 (10)
Penguins 15 (20)