Kaspars Daugavins slid the puck between Henrik Lundqvist's legs in the seventh round to give the Senators their third victory in four days -- all against teams from the New York metropolitan area. They won 2-1 in a shootout at New Jersey on Monday and beat the New York Islanders 3-1 at home on Tuesday.
"When we got down, I thought we played our best," coach Paul MacLean said of winning without star goaltender Craig Anderson. "We've got great leadership on this team."
Backup Ben Bishop got the win by stopping six of seven Rangers attempts in the shootout.
Bishop entered the game 1:43 into the third period after Rangers forward Chris Kreider lost an edge and slid into the Ottawa net, taking down Anderson in the process. The Senators goaltender was clearly shaken up and appeared to be holding up his right leg as he was helped off the ice. The Senators confirmed that Anderson has a sprained right ankle and is listed as day-to-day. He stopped all 21 shots he faced before the injury.
Kreider stepped on Marc Methot's stick, which led to the fall. The Ottawa defenseman described the horror he felt after seeing Anderson go down.
"My heart sank into my stomach," Methot said. "When you've a got a guy like that who's the heart and soul of team, and he's been playing so well … that was tough."
Kreider appeared upset after the game when asked what had happened. "I feel awful," Kreider said. "There was nothing I could do."
"We're going to start a pool on who [gets injured next]," joked captain Daniel Alfredsson, who was unaware of Anderson's status until informed by the media after the game that the goaltender wasn't severely hurt. Alfredsson appeared relieved. "Perfect," he said with a smile.
Jakob Silfverberg and Mika Zibanejad scored in regulation for the Senators. Ryan McDonagh and Ryan Callahan had the goals for the Rangers (8-6-2). Silfverberg and Callahan also scored in the shootout.
The Rangers have now lost two straight, while the Senators are on a three-game winning streak.
Ottawa (9-6-2) took the lead while killing a tripping penalty to Eric Gryba at 5:32. Silfverberg gained control of the puck in the neutral zone and flew up the right wing. Callahan attempted to catch the Swede but fell, giving Silfverberg plenty of time to sweep across the front of the net before roofing a backhander past Lundqvist at 6:48. It was the first shorthanded goal New York has allowed this season.
Silfverberg's deft hands have made swift work of elite goaltenders as of late -- the 22-year-old also scored the winning shootout goal against New Jersey's Martin Brodeur on Monday. But the Swede couldn't decide if beating his fellow countryman on Thursday night was a bigger feat.
"That's hard to say," Silfverberg said with a laugh. "[Brodeur and Lundqvist] are two of the biggest goaltenders in the League. It's a lot of fun to score on them. I can't pick one. But it does a lot for confidence. I'd been struggling to put the puck in the net. My backhand isn't as good as my [high wrist shot]. I kind of surprised myself."
New York's best chance of the period came on its second power play of the game, after Methot was called for hooking at 11:39. During a goalmouth scramble, Anderson was down and out on the left side of the net. Michael Del Zotto gained control of the puck at the right side of the net, but Alfredsson dropped to his knees in front of the open net, and the puck bounced off his left knee.
Bishop entered the game with a 1-0 lead, but the Rangers tied the game at 10:44 with a power-play goal after Sergei Gonchar was called for holding. Marc Staal's shot from the point bounced off the end boards and came back in front to Callahan, who beat Bishop to his stick side.
Just 51 seconds later, McDonagh's shot from the left point deflected through traffic and beat Bishop through the five hole to put the Rangers ahead. But Ottawa tied the game at 13:30 when Patrick Wiercioch's shot hit Lundqvist and came to Zibanejad at the left of the crease, and the rookie pumped a high shot past the helpless goaltender for a power-play goal.
With two minutes left in overtime, Bishop robbed Marian Gaborik and got a break when the Rangers' sniper nailed the post on the rebound.
The Rangers have a day off before visiting Montreal on Saturday. The Canadiens beat the Rangers 3-1 in New York on Tuesday.
"I thought we played better, but we're still not where we need to be," Callahan said in comparing Thursday's effort to the showing against the Canadiens. "I thought it was sporadic at times, but our third period was great. But we got into penalty trouble, and that's how this League is. But you have to be happy how the way we responded, and that's what we have to take into Montreal."