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Dean McAmmond is decked by Shane O'Brien in a 4-3 Senators setback. ((Reinhold Matay/Associated Press))

Make it seven consecutive losses and counting for the Ottawa Senators.

Vaclav Prospal scored the decisive goal of the shootout as the Tampa Bay Lightning pulled out a 4-3 victory over the visiting

Senators in front of 17,540 fans at St. Pete Times Forum on Tuesday night.

Prospal ripped a wrist shot high to Ray Emery's stick side to make it 2-1 Lightning in the shootout, leaving goaltender Johan Holmqvist to clinch the win with a pad save on Dany Heatley.

Tampa Bay had lost 10 of its previous 12 meetings with Ottawa.

"I'm not talking any negatives," Lightning head coach John Tortorella said. "We won a big hockey game against a pretty good hockey team."

Daniel Alfredsson had two goals and one assist for the Senators (16-7-3), whose seven-game skid (0-5-2) matches the franchise franchise record set in 1996.

"It is pro sports and winning is the only thing that matters," Alfredsson said. "But we are in kind of a slump.

"As a team, when you see everybody working and you see everybody really pulling together, that is a good sign. That is a sign of better things to come, I believe."

Alfredsson and Wade Redden scored 36 seconds apart to tie it 3-3 with 1:21 remaining in regulation.

"Mistakes were made [and] they will be addressed," Tortorella saidin explainingOttawa's comeback.

Heatley and Jason Spezza combined for three assists to extend their respective point streaks to eight games.

"I think we tried hard all game long, worked it pretty good, tried to create chances," Alfredsson said. "It is obviously very nice to see that we got rewarded.

"We would have loved to have won it in the shootout. But we are happy with getting a point."

Mathieu Darche, Chris Gratton and Filip Kuba scored for the Lightning (12-13-2), winners of their last two games.

Tampa Bay ended a six-game skid with a 3-1 victory over the Boston Bruins on Saturday.

Vincent Lecavalier, the NHL's top sniper with 52 goals last season, registered one assist and leads the league with 42 points (18 goals, 24 assists) in 27 games this season.

Martin St. Louiscontributed two assists.

With files from the Canadian Press