Just when it looked like it couldn't get any worse for the Senators Tuesday night, it only got better.

After losing stalwart defenceman Marc Methot to an injury early in the second, the Senators erased a two-goal deficit to score a last-minute 5-3 victory over the New York Islanders at the Nassau Veterans Memorial Coliseum.

The Senators extended their improbable winning streak to three games as Sergei Gonchar scored the winner on a blast from the point that beat Evgeni Nabokov to give Ottawa the victory with 60 seconds left on the clock.

"It's kind of a lucky (goal). When you score the game winner, you're always happy. We're happy to get any points. It doesn't matter who we're playing against," said Gonchar, who was plus-5, had three points and played 25:44.

"I don't think surprised is the right word. We've done it before. It's more about confidence. When you've done it before, you feel like you can do it again. We're all helping to get the job done. We're all playing decent hockey."

Winger Guillaume Latendresse scored into an empty net and captain Daniel Alfredsson picked up his 1,100th career point with the assist on that goal.

"I didn't know until I got into the room. It feels good -- coming in a win like this makes it nicer," said Alfredsson.

Zack Smith, Jakob Silfverberg and Matt Kassian also scored on Nabokov while Keith Aucoin, Josh Bailey and Lubomir Visnovsky took advantage of Ben Bishop, who wasn't at his best in the Ottawa net but got the win.

Losing Methot, who didn't return after being hit by Brad Boyes, is a huge blow. He suffered a "lower body" injury. He is averaging 23:09 without top defenceman Erik Karlsson and the club is already taxing Gonchar, which didn't seem to hurt him Tuesday.