Unhappy with the team's recent production, coach John Stevens is shaking up three of the Flyers' four lines.

The top line _ Jeff Carter centering Scott Hartnell and Danny Briere _ was the only unit to remain intact during Monday's practice in Voorhees.

The other lines looked like this:

Simon Gagne-Mike Richards-Arron Asham.

James van Riemsdyk-Claude Giroux-Ian Laperriere.

Dan Carcillo-Mika Pyorala-Darroll Powe.

The major change has Giroux and Asham trading lines. Giroux goes from right wing on Richards' line to center on the third line. Stevens prefers Giroux at center, where he can handle the puck more and use his considerable skating and playmaking skills.

Asham, who scored his first goal and was the Flyers' best player in Friday's 4-2 loss in Florida, will provide a physical presence on Richards' line and perhaps give the goal-less Gagne some room to operate.

"I know what my role is with that line," Asham said. "I'm going to give them the puck, crash the net and work in the corners and kind of be a physical presence out there and make sure no one takes any liberties on Gags or Richie."

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Ole-Kristian Tollefsen will replace the injured Ryan Parent and join Danny Syvret on the third defensive pairing against visiting Boston Thursday.

Stevens said he wants to give his third defensive pairing more ice time. That's because Chris Pronger (28:13 per game), Matt Carle (25:03), Braydon Coburn (25:26) and Kimmo Timonen (23:59) are logging an inordinate amount of minutes. All are in the top five percent in the league _ and Pronger is No. 1 in the league.

Tollefsen has averaged just 6:47 a game, which is about two minutes less than the little-used Syvret.

With Parent injured, the Flyers could use a veteran like Randy Jones, but his cap hit ($2.75 million) will not let him be recalled from the AHL Phantoms because, even if he cleared waivers, the Flyers don't have enough cap space unless someone went on the long-term injury list.

In another matter, Blair Betts (shoulder) was still unable to have any contact Monday and probably won't play until Saturday at the earliest.

Ray Emery will play in goal Thursday against Boston; Brian Boucher, who looked sharp while playing for the Phantoms the other night, will make his first Flyers start this season either Saturday vs. Florida or Sunday vs. his former team, San Jose.

Thursday is Dollar Dog Night, and fans will try to surpass last year's record of 20,000 hot dogs eaten. The Flyers will unveil their Broad Street Bully Dog, a jumbo hot dog featuring chili, cheese, diced onions and bacon.

The Schmitter has some competition.