Tim Thomas gave up a goal to Claude Giroux, but stopped Matt Read and Wayne Simmonds to preserve the victory.
The Bruins are now tied with the Rangers atop the Eastern Conference with 64 points, but New York remains in first place as the Rangers have two more regulation/overtime wins than Boston. The Bruins are off to Washington, where they'll stop by the White House Monday, then play their final game before the All-Star break Tuesday against the Capitals.
End Overtime, 5-5: The Bruins can't convert on the man advantage and this one will be settled in a shootout.
Overtime, 3:20, 5-5: The Bruins will get a power-play chance late in overtime as Kimmo Timonen gets called for holding after tackling Krejci in front. the ruins use their timeout to set up the power play.
Overtime, 1:32, 5-5: Thomas with the first big save in overtime as he denied Matt Read on a chance at the top of the crease.
Overtime, 0:00, 5-5: The extra session is under way, with five minutes of sudden death 4-on-4 action on tap in Philadelphia.
End Regulation, 5-5: Sixty minutes won't be enough to settle this one, as the Bruins and Flyers will earn a point and fight for the extra point in overtime.
Third Period, 18:53, 5-5: The Bruins kill that penalty off with their best shorthanded effort of the day, keeping Philadelphia from even getting a shot on net during that power play.
Third Period, 16:53, 5-5: The Bruins pick up yet another penalty. This time it's Chris Kelly going to the box for holding as the Bruins face their biggest kill of a the day against a Flyers team that's already struck for three power-play goals.
Third Period, 14:45, 5-5: The Bruins do kill that one off and the sides are back at even strength with just over five minutes left in regulation.
Third Period, 12:45, 5-5: The Flyers will have yet another power play as Johnny Boychuk is guilty of tripping up Brayden Schenn.
Third Period, 10:38, 5-5: The Flyers convert again on the power play and this one is tied up once more.
Max Talbot tipped the shot in front of Thomas as Matt Carle fired it in from the blue line.
Third Period, 9:11, Bruins 5-4: Thomas makes a big save as Claude Giroux breaks in alone. Hartnell follows with a high hit on Chris Kelly, and Shawn Thornton immediately goes after Hartnell and handles him easily in a quick scrap.
The Flyers will get a power play out of all that as Thornton gets the extra minor.
Third Period, 7:52, Bruins 5-4: Rich Peverley has been taking shifts on the top line with Milan Lucic and David Krejci. Nathan Horton is not on the bench. No report yet on what may be wrong, though he took a hit up high from Tim Sestito in the second period.
Third Period, 4:59, Bruins 5-4: The Bruins have retaken the lead as the fourth line produces the go-ahead goal.
After Adam McQuaid drove in deep behind the net, Daniel Paille got the loose puck and fed it out front for Gregory Campbell to tap home from the top of the crease. The Flyers use their timeout after the goal to try to settle things down.
Third Period, 1:19, 4-4: The Bruins get the answer they needed as David Krejci tips one in to tie it again.
Krejci set up in the low slot and redirected a shot by Rich Peverley from the left point as Chara drove the net to distract Bryzgalov. Lucic got the second assist to complete his Gordie Howe hat trick.
Third Period, 0:00, Flyers 4-3: Those final 46.5 seconds of the second are now completed, and the teams have switched ends to begin the third.
Second Period, 19:13, Flyers 4-3: The final frame is under way in Philadelphia, with the final 46.5 seconds of the second periods to be completed first.
Second Intermission Notes: After a strong opening period, things fell apart quickly in the second for the Bruins as Scott Hartnell and the Flyers struck for three straight goals to take a 4-3 lead.
The Flyers outshot Boston 15-6 in that frame and lead 25-21 overall. Hartnell has eight of those shots, with three so far getting past Tim Thomas.
Philadelphia is dominating the hit count too, leading 26-14 there. Hartnell is contributing to that as well with four hits, while Tim Sestito has six and Brayden Schenn five. No Bruin has more than two hits.
One of Schenn's hit knocked Steven Kampfer out of the game in the first, but he returned in the second. He's now played 2:45 over five shifts with one hit of his own. Kampfer's return was about the only bright spot for the Bruins in the second.
End Second Period, Flyers 4-3: With hats littering the ice, the officials have called for an early intermission. The final 47 seconds of the middle frame will be tacked on to the third period.
Second Period, 19:13, Flyers 4-3: Scott Hartnell is not denied this time, completely the natural hat trick with his third goal of the period to give the Flyers their first lead.
Hartnell strikes again on the power play with another one-timer from the slot off a feed from Claude Giroux.
Second Period, 18:25, 3-3: The Bruins are shorthanded again as Milan Lucic is called for interference. Thomas denies Hartnell the hat trick with a great glove save to get the whistle.
Second Period, 17:06, 3-3: The Bruins survive that Philadelphia power play, with Thomas making a few big saves to keep this game tied.
Second Period, 15:06, 3-3: The parade to the penalty box has resumed, with the Bruins shorthanded again as Tyler Seguin is called for high-sticking.
Second Period, 12:37, 3-3: Things have settled down a bit the last few minutes. Thornton's bout seemed to stall Philadelphia's momentum, but Boston hasn't really grabbed it back as the play has been pretty even over this last stretch.
Second Period, 7:28, 3-3: The gloves come off after the faceoff following the goal as Shawn Thornton and Jody Shelley engage in a length heavyweight bout at center ice.
Second Period, 7:25, 3-3: The Flyers pull even as Scott Hartnell scores again.
Claude Giroux stopped a clearing attempt at the point and got the puck down to Hartnell in the slot, and Hartnell turned a fired a knuckler past Thomas.
Second Period, 5:30, Bruins 3-2: There is some good news for the Bruins in this period, as Steven Kampfer has returned and skated a shift here in the second.
Second Period, 3:23, Bruins 3-2: The Flyers convert on the power play as Scott Hartnell one-times a shot from the slot.
Hartnell takes the pass from Claude Giroux to pull Philadelphia back within a goal.
Second Period, 2:53, Bruins 3-1: Things get nasty again as Nathan Horton takes exception to a hit up high, leading to a scrum in the corner. The Flyers end up with the power play as Horton and Lucic each get roughing minors and Marc-Andre Bourdon gets the only call for the Flyers for interference.
Second Period, 0:00, Bruins 3-1: The middle frame is under way in Philadelphia, where the Bruins will look to build off their strong performance in the first.
First Intermission Notes: The Bruins got off to the start they needed, striking in the opening minute and adding two more before the end of the first for a 3-1 lead after one period.
It's been a nasty one from the start, which is nothing new between the Bruins and Flyers. Milan Lucic battled Tim Sestito early and Chris Kelly took on Brayden Schenn later after Schenn blasted Steven Kampfer with a clean but brutal hit. Kampfer, returning to the lineup with Andrew Ference suspended, did not play again after that hit. He had just two shifts for 47 seconds.
Overall, the teams combined for 12 penalties for 36 minutes. The Bruins struggled early on the power play but finally converted once on four chances, while killing off both Philadelphia power plays.
End First Period, Bruins 3-1: An eventful opening frame is in the books with the Bruins taking a two-goal lead after period filled with plenty of hits, penalties and a pair of fights.
First Period, 16:05, Bruins 3-1: The Bruins kill off that penalty and nearly score shorthanded as Brad Marchand had a chance all alone in front, but Bryzgalov makes the save on Marchand's backhand bid at the right post.
First Period, 14:05, Bruins 3-1: The Bruins get another penalty as well as Chara goes off for delay of game as he deflects a puck up into the netting trying to break up a shorthanded 2 on 1. It will be 4 on 4 for 38 seconds before the Flyers go on the power play.
First Period, 12:43, Bruins 3-1: The nastiness continues, as Brad Marchand drives the net and gets bumped into Bryzgalov by Meszaros. That leads to a scrum, with Bryzgalov throwing punches with his blocker on at Marchand to get the only penalty for roughing.
First Period, 12:30, Bruins 3-1: The Bruins kill off the penalty, then add another goal as Milan Lucic pushes the lead to two.
Lucic came down the right wing, cuts to the middle and fires in a shot from the circle.
First Period, 9:37, Bruins 2-1: The gloves come off again as Chris Kelly steps up in defense of Steven Kampfer after Brayden Schenn blasts the young defenseman with a huge hit. Kelly gets the extra two for unsportsmanlike conduct to put Philadelphia on the power play, but the bigger concern is for Kampfer, who was down and hurt and has a history of concussions.
First Period, 9:01, Bruins 2-1: The Bruins finally convert a power play as Tyler Seguin puts Boston back ahead.
Seguin banged it home at the right post after Bergeron set him up with a pass from behind the net.
First Period, 8:05, 1-1: The Bruins are back on the power play as Jakub Voracek is called for tripping Adam McQuaid on a dangerous play that appeared to be a possible slew foot along the boards.
First Period, 7:31, 1-1: The Bruins can't get anything going on that power play, especially during the two-man advantage, and the sides are back to even strength.
First Period, 6:40, 1-1: The penalties keep coming, with David Krejci and Max Talbot drawing matching roughing minors after getting tangled up in front of the benches as both teams went for changes.
First Period, 5:31, 1-1: The Bruins will get a 5-on-3 advantage for 42 seconds as the Flyers are caught with too many men on the ice during the penalty kill. Huge chance here that the Bruins need to cash in on.
First Period, 4:13, 1-1: The Bruins get the first power-play chance of the afternoon as Sean Couturier gets sent to the box for slashing.
First Period, 2:05, 1-1: The Flyers answer right back as Max Talbot ties the game on a fortunate bounce.
Talbot sent a centering pass from the right corner intended for Jakub Voracek, but Dennis Seidenberg got a stick on it in front, inadvertently deflecting it past Thomas.
First Period, 1:24, Bruins 1-0: The gloves come off early as Milan Lucic squares off with call-up Tom Sestito. Both throw and land some big rights, though Lucic appeared to score the hardest blows in a spirited scrap.
First Period, 0:50, Bruins 1-0: The Bruins waste no time getting on the board in this one, with Patrice Bergeron scoring less than a minute in.
Brad Marchand sent the pass across from the left boards to Bergeron, who put it home at the right post.
First Period, 0:00, 0-0: This one is under way in Philadelphia, where the Bruins will look to bounce back without Andrew Ference.
The league has finally announced the length of that suspension, which will be for three games.
3 p.m.: The Bruins will open with Benoit Pouliot, Chris Kelly and Rich Peverley up front, Zdeno Chara and Adam McQuaid on defense and Tim Thomas in goal.
The Flyers counter with Matt Read, Sean Couturier and Wayne Simmonds up front, Andrej Meszaros and Erik Gustafsson on the blue line and Ilya Bryzgalov in net.
2:55 p.m.: The Bruins have scratched Zach Hamill along with the suspended Ference.
The Flyers scratch Andreas Lilja along with injured Jaromir Jagr, Danny Briere, Zac Rinaldo, James van Riemsdyk and Blair Betts.
2:45 p.m.: With Ference out, the Bruins will have to shake up their defense pairs.
Based on the warm-ups, it looks like Steven Kampfer will play with Johnny Boychuk in his return to the lineup replacing Ference. Joe Corvo, who had been playing with Ference recently, is reunited with Dennis Seidenberg and Adam McQuaid continues his climb up the depth chart to the top pairing alongside Zdeno Chara.
2:30 p.m.: As expected, Tim Thomas led the Bruins out for warm-ups and will get the start in this one after Tuukka Rask played Saturday vs. the Rangers.
Thomas is 11-3-2 with a 2.04 GAA and .939 save percentage all-time against the Flyers, including a 31-save shutout in Philadelphia on Dec. 17.
Ilya Bryzgalov led out the Flyers and will be in net for Philadelphia.
2:15 p.m.: The Bruins get right back to work, facing the Flyers in less than an hour.
They'll do it without defenseman Andrew Ference. Claude Julien revealed that Ference has been suspended for his hit on Rangers defenseman Ryan McDonagh on Saturday, but the NHL has not informed the Bruins how many games Ference will sit.
8 a.m. ET: The Bruins won't get much time to dwell on Saturday's overtime loss to the Rangers, as they head right out on the road to face the Flyers in Philadelphia on Sunday.
The Bruins (30-13-2, 62 points) fell 3-2 in overtime to New York as Marian Gaborik scored a power-play goal with 3.6 seconds left in the extra session. The power play came as a result of an Andrew Ference hit on Ryan McDonagh which drew a five-minute major for charging and game misconduct for Ference. It may also result in more time off for the Bruins defenseman. Steven Kampfer was recalled from Providence after the game and accompanied the team to Philadelphia. He will return to the lineup if Ference is suspended.
The Flyers (28-14-4, 60 points) also played Saturday, beating the Devils 4-1. But it was a costly win for Philadelphia, which lost Daniel Briere (concussion), Jaromir Jagr (groin) and Zac Rinaldo (upper body) to injuries during the game. They join a lengthy injury list for the Flyers with Chris Pronger already out for the year with a concussion and James van Riemsdyk also sidelined with a concussion.
Philadelphia recalled Ben Holmstrom and Tom Sestito from their AHL affiliate in Adirondack to help fill out the roster.
Tim Thomas is likely to be back in net after Tuukka Rask got the start on Saturday. Thomas is 11-3-2 with a 2.04 GAA and .939 save percentage all-time against Philadelphia. That includes a 31-save shutout on Dec. 17 in the Bruins' last visit to Philadelphia. Boston rolled to a 6-0 win that day, avenging a 2-1 loss at the Garden in the season-opener on Oct. 6.
The puck drops at 3 p.m., so check back here for updates on all the action.