PHILADELPHIA -- One Alex was all the Washington Capitals needed.
Playing without ailing star forward Alexander Ovechkin for the first time this season, the Capitals showed their resilience after wasting a 3-0 lead.
"The important part for us, is that a team came back, scores four goals and takes a lead on us. But we battled back, and obviously, we did great in the shootout," Capitals coach Bruce Boudreau said. "But it was important for us to show the where-with-all to come back. When you believe you can win, you can do a lot of things."
The Flyers maintained the edge in the East by earning a point for going into overtime. Philadelphia has two more games remaining (10-8) than the Caps.
Semin beat Brian Boucher with a nifty move and backhanded a shot into the top corner for the winner.
"We were a little bit lucky there," Backstrom said. "They definitely came out harder in the second and third period, and we weren't ready for it. But both teams knew how important this game was, and we turned it around there eventually."
Ovechkin, who leads the Capitals with 77 points, was shut down on Monday for seven to 10 days with an undisclosed injury.
For a while, it didn't seem to matter.
Briere, Kris Versteeg, Giroux and Andreas Nodl scored for Philadelphia, which got a poor performance from goaltender Sergei Bobrovsky. The rookie was replaced by Boucher after allowing three goals on nine shots.
"From my standpoint, I was disappointed," Boucher said. "I felt like I could've done more. Some days, you have it. Some days, you don't."
The Capitals have come a long way since a 2-6 stretch in mid-December dropped their record to 18-12-4. They're 25-9-6 since Dec. 18.
Briere deflected a slap shot from Leino past Neuvirth to put Philadelphia ahead 4-3 with 5:45 left. But, Johansson beat Boucher with a one-timer from outside the left circle to tie it at 4 with 3:19 remaining.
Down 3-2 to start the third, the Flyers had a couple of solid chances to tie it, but couldn't get a break. Then a giveaway by Capitals defenseman Jeff Schultz set up Nodl's tying goal. Nodl was standing alone near the net when Schultz's clearing pass bounced right to him. He lifted a shot into the top lefthand corner to make it 3-3.
The Flyers cut it to 3-1 on a fluky goal midway through the second. Versteeg's pass intended for a streaking Nodl went through one defenseman's legs, hit off Wideman's skate and went in.
Andrej Meszaros just missed getting Philadelphia within one late in the second when his shot hit the post.
But Giroux sent the Flyers into the final period trailing 3-2 when he scored with 34 seconds left in the second. Giroux, standing in the left faceoff circle, took a perfect crossing pass from Nodl and fired a one-timer into a wide-open net.
The Flyers nearly tied it early in the third when Mike Richards hit the post. A few minutes later, Leino's point-blank shot was stopped.
Backstrom gave the Capitals a 1-0 lead 7:52 into the game. His slap shot from just inside the blue line hit off Bobrovsky's pads and trickled under his left elbow.
Knuble, a former Flyer, put Washington up 2-0 late in the first. Knuble was skating toward the net and fell down as a behind-the-net pass from Jason Chimera bounced off the blade of his stick and popped up past Bobrovsky.
Wideman made it 3-0 early in the second with a power-play goal. His one-timer from the blue line deflected off Bobrovsky's right pad and slipped in.
That was it for Bobrovsky. Fans chanted "Booooosh" as Boucher skated onto the ice. Flyers coach Peter Laviolette hasn't committed to a playoff starter, and Bobrovsky's effort against the Capitals could hurt his chances.
"His year has been good," Laviolette said. "Tonight? He probably wishes he could have some of those back. We all have tough games."
- Flyers LW Jody Shelley will have surgery Thursday to repair a fractured orbital bone on the left side of his face. Shelley was injured when a puck hit his face in practice Monday. He'll miss about four weeks.
- The Capitals have two games left on their season-high six-game road trip.
- Washington is 31-56-8 in Philadelphia.
- Wideman has nine power-play goals, tops in the NHL among defensemen.
- The Flyers haven't beaten Washington in regulation since Feb. 24, 2009.