OTTAWA -- Pascal Leclaire and the Ottawa Senators were able to keep John Tavares from scoring a goal, but they couldn't prevent the New York Islanders' prized prospect from contributing to the score sheet.
The Senators, however, pulled out the win.
Mike Fisher scored 32 seconds into overtime to give Ottawa a victory over the Islanders on Thursday night.
Fisher broke down the left side and put the first shot of the extra period past Martin Biron as Ottawa (2-1) won its home opener.
"They pushed pretty hard, especially when they got that power-play goal in the third and they got a bit of momentum out of it," said Leclaire, who made 23 saves in his third straight start for the Senators. "Then we got that big goal in overtime. It's pretty exciting, and as a goalie you like that. You don't have to go to a shootout, and the fans get what they want. So it's a good night. It shows a lot of character."
Tavares, the No. 1 overall pick in this year's NHL draft, recorded his third point in two games with the Islanders (0-0-2).
"He's crafty," Fisher said. "He makes plays and he's good with the puck. On the power play, we've got to key in on him. He can make plays, for sure."
The 19-year-old center assisted on Matt Moulson's power-play goal 5:29 into the third which drew New York even at 2, allowing the Islanders to earn their second standings point.
"I thought I did well and I'm hoping to do better next time and keep improving from there," said Tavares, who had a goal and an assist in his debut, a 4-3 loss to Pittsburgh on Saturday.
He came close to scoring in the second, but Leclaire stuck out his left pad to deny his shot at an open right side.
"I didn't even know it was him, it happened too quick," Leclaire said. "He's good. He's got a lot of pressure on him. Everybody's looking at what he does, and he's already an impact player on that team. The way he handles the puck, he's patient already and he doesn't get rattled -- he's going to be a good one for sure."
"I thanked [Fisher] at the end there for winning the game," Carkner said. "If we didn't win, it wouldn't have felt half as good. It was awesome to get the win."
Kyle Okposo, Tavares' and Moulson's linemate, drew the Islanders within 2-1 late in the second with his first goal of the season.
Biron, in his first Islanders start, stopped 25 shots. He made a huge glove save on Alexei Kovalev during an Ottawa power play with 6:20 remaining in regulation.
"We got two points in two games, but the other teams got four," Biron said. "We know that we fought hard, we fought hard against Pittsburgh at home, we had the lead, took the lead again, we fought back to get in the game tonight -- we're not satisfied with that.
"People might look at it as positive. It's a step, but it's not the step we want to take. The guys are not happy about losing. We all hate losing and that's a good sign."
Doug Weight made his debut as the 12th captain in Islanders franchise history after sitting out the home opener because of a groin injury.
Moulson took Weight's centering pass from the left corner and beat Leclaire with a shot from the goal mouth.
Regin opened the scoring 7:25 in when he redirected Chris Neil's shot from the edge of the crease for his second of the season.
Carkner, a second-round pick by Montreal in the 1999 draft who played in two NHL games before this season, scored his first goal 13:12 into the second to put the Senators up 2-0.
Carkner carried the puck down the right side and was behind the goal line when he centered the puck, which struck Biron's stick and caromed into the net.
"It's definitely not something that I planned, but it was a definite bonus for me," Carkner said.
Okposo made it 2-1 with 2:04 remaining in the second. Moulson earned an assist when Okposo finished off a strong individual effort as he cut to the net from the left side and reached around to swipe the puck past Leclaire.
Islanders C Rob Schremp and LW Blake Comeau also made their season debuts. Schremp was claimed off waivers from Edmonton on Sept. 29. ... Carkner had one assist when he made his NHL debut with San Jose in the 2005-06 season. He also appeared in one game with Ottawa last season. ... Senators LW Jarkko Ruutu played his 500th regular-season game. Ruutu, called for tripping early in the third, has 43 goals, 62 assists and 866 penalty minutes in his NHL career with Ottawa, Pittsburgh and Vancouver.