WASHINGTON -- Nicklas Backstrom scored on the power play with 1:35 remaining in overtime to give the Washington Capitals their 15th consecutive win at Verizon Center, 2-1 against the Philadelphia Flyers on Saturday.
"Early on that 4-on-3 they took away pretty much [Alex Ovechkin] and [Kevin Shattenkirk] there," Backstrom said. "They gave me the shot there from the half-wall. [T.J. Oshie] was in a great position in front, good screen. Just trying to shoot short side there."
Dmitry Orlov scored for the Capitals (44-13-7), who have won three games in a row and are 16-0-1 in their past 17 at home. Braden Holtby made 30 saves.
WATCH: All Flyers vs. Capitals highlights
Steve Mason made 22 saves for the Flyers (30-26-8), who lost for the first time in three games.
"Sometimes the games go like that," forward Jakub Voracek said. "There is not much space, not much room. They check pretty hard. I think we played pretty good defensively as well. Sometimes it happens. Sometimes you have 15 shots, sometimes you have five. We [have to] go with the flow."
Sean Couturier scored his 10th goal, first since Feb. 2, to give Philadelphia a 1-0 lead at 1:19 of the third period.
Video: PHI@WSH: Couturier tips Read's shot past Holtby
Orlov tied it 1-1 at 2:40 with his fifth goal and first since Jan. 23.
The Flyers had two power plays in each period but finished the night 0-for-6. Washington's penalty kill is 14-for-14 in the past three games.
The Flyers did not have a shot on goal in the second period until Holtby made a save on Couturier at 8:55.
Oshie was in the Capitals lineup after missing four games with an upper-body injury. Flyers forward Travis Konecny returned after missing nine games with a lower-body injury.
"I felt good," Oshie said. "Honestly, I thought I was going to be a little more tired and my legs weren't [going to] be under me, but I felt great. I felt from the drop of the puck my legs were going. Hands weren't catching up, but by the end they started feeling a little bit better."
The Capitals lead the Columbus Blue Jackets and Pittsburgh Penguins by nine points for first place in the Metropolitan Division and Eastern Conference.
Video: PHI@WSH: Holtby denies Couturier on the doorstep
The Flyers trail the New York Islanders by three points for the second wild card into the Stanley Cup Playoffs from the Eastern Conference.
Goal of the game
Backstrom took his time before beating Mason past his blocker from just inside the right faceoff dot.
Video: PHI@WSH: Backstrom snipes game-winning PPG in OT
Save of the game
Mason sprawled to stop Oshie during a delayed penalty in overtime and lost his mask on the save at 2:19.
Video: PHI@WSH: Mason lays out, loses mask on amazing save
Highlight of the game
Orlov carried the puck into the Flyers' zone before beating Mason past his blocker with a slap shot from the point that went between defensemen Radko Gudas and Michael Del Zotto.
Video: PHI@WSH: Orlov sizzles a slap shot past Mason
Unsung performance of the game
Capitals forward Tom Wilson had a game-high nine hits in 12:59, and he didn't miss a shift after sliding to block a Del Zotto slap shot with his backside at 3:56 of the second period.
They said it
"I think the last three games we've been playing some really good hockey. We had some of the results we want, but if we play like we did tonight, we're going to win a lot of hockey games." -- Flyers captain Claude Giroux
"It was great. He really started to come along as the game went on. I know he said he was a little jittery at the beginning. But it was great to see him out there. We had some great plays together, and we kind of play similar games and he's someone who always puts himself in the right spots, so it was great to have another talented player out in this lineup." -- Capitals defenseman Kevin Shattenkirk on the return of T.J. Oshie, his teammate with the St. Louis Blues for five seasons
"Teams that we're playing are desperate. They have a game plan going in, and we just have to play through it sometimes. I think for us, just when we're playing with speed to our game and we're getting all four lines involved, I thought we did that in the second, and we're a much better team (playing that way)." -- Capitals coach Barry Trotz
Need to know
Shattenkirk got his first point with the Capitals when he was credited with the primary assist on Backstrom's goal. … Orlov has scored five of his 19 NHL against the Flyers.
Flyers: At the Buffalo Sabres on Tuesday (7:30 p.m. ET; NBCSN, CSN-PH, NHL.TV)
Capitals: Host the Dallas Stars on Monday (7:30 p.m. ET; NBCSN, CSN-DC, NHL.TV)
Video: Backstrom delivers game-winning goal in OT