OTTAWA - Fresh from beating Pittsburgh and Buffalo, the Ottawa Senators got another big win against the top team in the East to grab the Northeast Division lead.
Mike Fisher scored 1:14 into overtime, giving Ottawa a 4-3 comeback victory over the Washington Capitals on Monday night.
Fisher, selected the NHL's third star of the week earlier in the day, batted Chris Phillips' centring pass out of the air and past Semyon Varlamov for his 10th goal of the season.
The Senators won their fourth in a row to take the division lead with 27 points, one ahead of the idle Sabres and Boston, which gained a share of second place with a 4-2 win in St. Louis.
"We've been elevating our game against top teams and that's a great sign," Fisher said.
Brian Elliott made 25 saves in his fifth start for the Senators, who rallied from a 3-1 deficit in the third period to win their fourth in a row and wrap up a 4-0-1 homestand. Until this win, the Senators had been 0-5-1 when trailing after two periods, while Washington had been 8-0-1 when ahead after 40 minutes.
Alexandre Picard scored Ottawa's second goal in a span of 4:20 on a power play 7:40 into the third to tie it at 3-3. Filip Kuba had three assists, setting up each of the Senators' last three goals.
"We made some adjustments in the neutral zone," Fisher said. "We did a few different things coming into the third and we started moving our feet a little bit more and drew some penalties. We were hungry and we knew that we could come back."
Peter Regin gave the Senators a 1-0 lead 7:27 in before Ottawa allowed three straight goals.
Chris Neil got his fourth goal 3:18 into the third to draw the Senators to within 3-2 before Picard beat Varlamov with a slap shot from the point to tie it after Alex Ovechkin was called for roughing at 6:43.
Rookie Jay Beagle got his first NHL goal to put Washington up 3-1 in the second after Chris Clark and Brendan Morrison scored in the first.
Varlamov stopped 33 shots for the injury-ravaged Capitals, who have dropped four of five (1-2-2), including a 2-1 shootout loss Saturday in Toronto.
The Capitals, who sit atop the Southeast Division with 32 points, dropped into a tie for the conference lead with Pittsburgh, which beat Florida 3-2 in overtime.
Capitals right wing Alexander Semin missed his fourth straight game because of a wrist injury. Milan Jurcina, Boyd Gordon, Shaone Morrisonn and Tom Poti all remain day-to-day with a variety of injuries and were also out of the lineup once again for Washington, which has also lost Mike Knuble to a broken finger and Quintin Lang to a broken jaw.
Regin opened the scoring off a deflection. He tipped Jesse Winchester's shot past Varlamov from the edge of the crease for his third goal.
Clark drew Washington even at 11:19 when Brian Pothier's slap pass went in off the Washington captain's left skate. Ovechkin drew an assist for his pass to Pothier to begin the play - and the goal was upheld by a video review.
Morrison gave Washington the lead with 29.3 seconds left in the first when he skated past the crease to redirect Mike Green's pass for his eighth goal.
Beagle made it a 3-1 advantage with an unassisted effort 11:44 into the second. The 24-year-old rookie beat Elliott with a snap shot from the slot after the puck landed at his feet when Senators forward Jonathan Cheechoo's backhand clearing attempt struck him on the skate.
NOTES: Elliott stopped 14 shots in the third period of Saturday's 5-3 win over Buffalo after taking over for Pascal Leclaire, who left after the second with a lower-body injury ... Capitals C David Steckel scooped up the puck from Beagle's goal and flipped it to the Capitals' bench. Ovechkin congratulated Beagle moments later, skating up to the boards to knock helmets with him as he sat on the bench ... Leclaire was in uniform as Elliott's backup ... Fisher had two goals and four assists in three games last week ... The Senators head to Newark, N.J., on Wednesday to take on the Devils (7 p.m., TSN2, Team 1200) before returning home to face the Columbus Blue Jackets on Thursday night (7:30 p.m., TSN, Team 1200). Fewer than 1,500 tickets remain for the game.