Summary — The Flyers became just the third team in the history of the National Hockey League  to come back from a 3-0 series deficit and win a seven-game series, in the process coming back from a 3-0 first-period hole to score four straight goals to advance to the Eastern Conference finals with a 4-3 win over the Bruins at TD Garden on Friday night.
Tuukka Rask  was the loser for Boston, allowing the four Flyers goals on 27 shots. Michael Leighton overcame a shaky first period to put the clamps down on the Bruins season with 25 saves. Simon Gagne scored the game-winner at 12:52 in the third period on the power play after the B’s were whistled for too many men on the ice.
The Bruins struck first (and, for that matter, second and third), jumping to an early lead eight seconds into a power play after Scott Hartnell went to the box for a high sticking call on Matt Hunwick in the neutral zone at 5:18 in the first period. Boston wasted no time, controlling the puck on the face off and getting a couple attempts on Leighton. The second — of the stick of Zdeno Chara  — rebounded down to the right dot, where Michael Ryder  sent it right back on the crease past a hopping Mark Recchi  and the Bruins were off and running at 5:27.
Boston made it 2-0, again on the power play, at 9:02 when a broken rush through the neutral zone ended up in a reset by Dennis Wideman , who decided to take it all the way down the right wing into the corner and send it back towards the crease where Milan Lucic  timed his crash perfectly to bang it past Leighton for the two-goal advantage before the first period was halfway over.
Leighton would let in a third straight Boston goal at at 14:10 as Lucic struck again when he turned a giveaway into a lamplighter when he rushed all the way down the right wing and let off a snap shot by the right faceoff dot that went five-hole and made TD Garden erupt.
But the Flyers, remarkably, refused to concede defeat. James Van Riemsdyk fought hard to the right of Rask, leveling Wideman and getting a broken-play dribbler under the net minder’s left pad for a soft goal that made it 3-1 at 17:12 in the first. It was Van Riemsdyk’s first career playoff goal in his second professional season (first in the NHL ) coming out of the University of New Hampshire.
The Flyers made it a one-goal game early in the second period on an even strength play where Danny Briere was able to penetrate the Rask’s crease after Ville Leino put the puck deep. Briere did a spin-o-rama and put the puck across the crease, where Andrew Ference  could not put a stick on it at the goal line and Scott Hartnell flipped it back over Rask at 2:49.
The comeback was complete when Briere struck on his own, this time with the assist from Hartnell at 8:39 of the second period. Briere came back down around the net and did a wrap-around on Rask that rattled through the net and back out the other side to tie the game at three. The play was reviewed but it was conclusive that Briere had put the puck in the net and Boston had relinquished another 3-0 lead in the series.
Simon Gagne — His Game 4 return from a broken toe made all the difference for the Flyers in this series as he scored his second game-winner of the series to complete the series comeback.
Danny Briere — Perpetual thorn in the Bruins side was instrumental in getting the Flyers back in the game as his goal and assist in the second period were the answer Philadelphia was looking for after it went down 3-0 in the first.
Milan Lucic — Two first period goals got TD Garden pumping as the Boston forward set the stage for the excitement that was to come.
Turning Point — When Briere and Hartnell teamed up to take over in the second period. The pair was able to bring the Flyers back from the brink as the Bruins went soft in front of Rask. The wily center and his large wingman were able to get deep into the crease twice to tie the game and give the Flyers a chance to win it in the third period.
Key Play — The Bruins took a too-many-men-on-the-ice penalty at 11:10 of the third period, which set the Flyers up to score the go-ahead goal by Gagne when he found the puck on the right dot in front of Rask for the wrist shot top shelf to bury Boston and its Stanley Cup  dreams once and for all.