PHILADELPHIA — Fans that have waited 39 years for a Stanley Cup championship might not be able to make it through this Bruins playoff run alive.

For the fourth time through nine games in the 2011 Stanley Cup playoffs, the Bruins won a nail-biting overtime game, this time 3-2 on a David Krejci goal 14:01 into the first extra session in Game 2 of the Eastern Conference semifinal series with the Flyers at the Wells Fargo Center tonight.

The Bruins now lead the series 2-0, despite allowing the Flyers a franchise record 22 overtime shots on goal.

The goal was initially waved off by the referee, but a quick video review counted the tally.

“Not right off the bat,” said head coach Claude Julien when asked if he knew the goal was in. “All I saw was the referee wave his hands like it was no goal. And it didn’t take us long to figure out it had been in. We felt pretty confident. It was nice to see us find a way to win.”

Here’s a quick glance at the box score:

•Tim Thomas made a remarkable 52 saves to keep the Bruins alive. Boston was outshot 32-12 over the third period and overtime.

•Chris Kelly and Brad Marchand scored Boston’s other goals after the Bruins fell behind, 2-0.

•James van Riemsdyk scored Philadelphia’s two goals and fired eight shots on net. He was second on the team to Mike Richards’ 10 shots on net.