OTTAWA (AP) -- The Ottawa Senators just needed some extra time to beat the Toronto Maple Leafs.

Dany Heatley scored the lone goal of the shootout to give Ottawa a 6-5 victory over Toronto on Monday night, the Senators' second shootout win over the Maple Leafs this season.

Dominik Hasek stopped Kyle Wellwood, Eric Lindros and Jason Allison in the shootout and Ottawa (3-0-0) remained unbeaten.

Hasek stopped Lindros and Allison when the teams went to a shootout in the season-opener last Wednesday. That night, Daniel Alfredsson and Heatley beat Ed Belfour as the Senators won the shootout 2-0 and the game 3-2.

Ottawa had a 4-2 lead in the third period on Monday, then had to force the overtime.

"To go up two goals in the third period doesn't mean you're going to win the game. Two years ago maybe, but not with the new rules," Hasek said.

"It's definitely a great feeling to win the game and to win in the shootout," Hasek said. "You get the extra one point which is great, but I would rather win the game in 60 minutes or in the regular overtime."

Both teams scored a goal while skating with 5-on-3 power plays. The Senators went 3-for-7 on the power play while the Leafs were 3-for-8.

"They put some good pressure on us," Alfredsson said of the third-period letdown. "It started with a penalty, it got them momentum and we couldn't stop it. That's something we have to get better at, there's no question about it.

"It's great to see a fighting spirit in us and not quitting. It used to be a lot easier holding guys up in the neutral zone and making it a lot tougher for the other guys to come in to forecheck. You can't do that anymore so once you get some momentum it's hard to stop it."

Ottawa's Jason Spezza scored his second goal of the game at 9:27 of the third period to tie it 5-5. Chris Neil, Heatley and Alfredsson also scored for the Senators.

Tie Domi, Clark Wilm and Nik Antropov all scored in a 1:55 span in the third period to erase a 4-2 deficit and give the Maple Leafs (0-1-0-2) a one-goal lead with just over 12 minutes to play in the third period.

Bryan McCabe and Darcy Tucker added power-play goals for Toronto. Tomas Kaberle had three assists for Toronto and McCabe had two.

"I was proud of how our guys bounced back," Maple Leafs coach Pat Quinn said. "It would be easy to accept what was going on. We were up earlier in the game as well and gave it up. We'll just have to find a way to play better. We took bad penalties, gave them a 5-on-3, we lose a draw and there's a loose puck in front of our net for an easy goal. Those are things that we have to do better. That has nothing to do with the lines or anything else, that's fundamental hockey. When you're going to miss it like that you're going to lose hockey games or opportunities to win it."

Heatley appeared to score the first goal against Toronto, but that goal was awarded to Neil between the first and second periods. Heatley then got his third of the season at 12:19 of the second to give the Senators a 3-2 lead.

Spezza scored earlier in the period to tie the game 2-2. McCabe scored on a two-man advantage, and one minute later Tucker scored to give Toronto a 2-1 lead.

With just over four minutes to play in the second period, Alfredsson made it 4-2 with the Senators enjoying a 5-on-3 advantage.

Game notes
The announced crowd of 18,680 marked the first time in three preseason and two regular season games the Senators didn't have a sellout. They set a franchise record in their home opener Saturday with a 19,661 spectators. Last season, a sellout at the Corel Centre was 18,500, but with extra standing room now available, that number has increased to 19,153.