By DJ Bean and Scott McLaughlin
The Bruins finished off the Flyers with a 5-1 win, sweeping the Eastern Conference semifinals in four games and advancing to the conference finals for the first time since 1992. The Bruins will next face the Lightning, who also swept their semifinals series vs. the Capitals.
Johnny Boychuk  sent a blast from the point over the glove of Sergei Bobrovsky at 2:42 of the third period to break a 1-1 tie. It was Boychuk’s second goal of the playoffs, both of which have come in series-clinching games this postseason.
Milan Lucic  had two goals for Boston in the win. With Daniel Carcillo in the box for cross-checking, Lucic put the Bruins on the board at 12:02, scoring his first goal of the playoffs and giving Boston its first 5-on-4 goal this postseason. The Flyers would apply minimal pressure throughout the rest of the first period, but got on the board thanks to a goal from deadline acquisition Kris Versteeg. Lucic added his second of the night on a breakaway in the third period. Brad Marchand  and Daniel Paille  added empty netters.
Tim Thomas  made 22 saves in the winning effort. It was the second straight game in which he allowed just one goal.
The Bruins will host the Lightning in Games 1 of 2 of the conference finals. The schedule of the series is currently unknown, though it may depend on when the Western Conference finals are set. San Jose and Vancouver hold 3-1 series leads over the Red Wings and Predators, respectively.
WHAT WENT RIGHT FOR THE BRUINS
– Lucic finally broke out of what was statistically a postseason-long scoring slump by picking up his first goal since March 22. He had played much better in this series than in a pedestrian first-round vs. the Canadiens, so it was fitting that he be rewarded with a big goal on the score sheet before the second round was over. Going forward, the B’s will need more like that from their 30-goal-scorer.
– The Bruins could let out the smallest of sighs of relief after their 5-on-3 goal in Game 3, but getting their first 5-on-4 goal didn’t come until Lucic killed two birds with one stone. Nathan Horton  hit Lucic with a pass on the doorstep to end the 5-on-4 drought and give Boston its second power play goal in the last two games (and of the playoffs).
– The Flyers turned up the pressure once the Bruins took a 2-1 lead, but the B’s responded to the challenge by getting in shooting lanes and preventing Philly from getting pucks to the front of the net. The Flyers tried to get shots from the point with traffic in front, but the Boston forwards did an excellent job of getting right on top of the Philly defensemen and not giving them anything to shoot at. Chris Kelly  led the effort with with three blocks.
– Another game vs. Philadelphia, another point for David Krejci . Boston’s first-line center has 18 points (five goals, 13 assists) over his last 13 games vs. Philadelphia. Krejci picked up a helper on Lucic’s first-period goal.
– The Bruins drew three penalties in the first by just moving their feet and attacking on offense. James van Riemsdyk went off for a hook when he couldn’t catch up to Lucic, who was driving hard to the net in search of a centering pass. Then Gregory Campbell  forced his way to the front of the net from below the goal line and drew a cross check on Daniel Carcillo. A few minutes later, Claude Giroux went to the box for a trip after Tomas Kaberle  cut inside him on an aggressive entry into the offensive zone. The power play resulting from Carcillo’s infraction ended with the Bruins’ second power-play goal in as many games.
WHAT WENT WRONG FOR THE BRUINS
– The B’s had an injury scare for just one of th least guys they could stand to lose. A hit from Claude Giroux in the third period sent Patrice Bergeron  downb the tunnel for the B’s, and he would not return to the game. Bergeron leads the Bruins with 12 points this postseason.
– Bad turnover by Brad Marchand in the Flyers’ zone to create a 2-on-0 for the Flyers, and it cost the B’s. Kris Versteeg beat Tim Thomas for his first goal of the playoffs. Versteeg was once property of the B’s, but was traded for Brandon Bochenski in 2007.
-The Bruins obviously want and need Zdeno Chara  to be physical, but with eight seconds left in the first, he took it a little too far. When Scott Hartnell took exception to Chara trying to clear out the front of the Boston net, Chara responded by dropping his gloves and then dropping Hartnell with one punch. Unfortunately for Chara, Hartnell never dropped his gloves and Chara got a double minor to put the Flyers on the power play. Two minutes without Hartnell in exchange for four minutes without Chara is a deal the Flyers will take 11 times out of 10.