ATLANTA — Mike Knuble, Simon Gagne and Joffrey Lupul each scored two goals and the Philadelphia Flyers earned their 11th straight win over the Atlanta Thrashers, 7-0 on Tuesday night.

The Flyers won their third consecutive game overall after a sluggish 0-3-3 start.

Antero Niittymaki stopped 24 shots in his fourth career shutout and improved to 10-0 against the Thrashers.

Knuble, who made it 2-0 at 3:13 of the second period, has four goals in three games and seven points in the last five.

Philadelphia took a 3-0 with 14.5 second left in the second period on Gagne’s second short-handed goal.

Mike Richards set up Gagne by stepping in front of Ron Hainsey to intercept Ilya Kovalchuk’s pass near the Thrashers’ blue line.

Knuble’s second goal of the game came on the power play and gave the Flyers a 4-0 lead 1:02 into the third.

Philadelphia had an extra man because Kovalchuk was penalized for throwing his stick following his giveaway.

Lupul made it 1-0 with an unassisted goal 1:20 into the game.

His second goal, and fifth this season, put Philadelphia up 5-0 just 37 seconds after Knuble’s third-period goal.

Kari Lehtonen’s only bright moment in the Atlanta net came with 7:47 remaining when he stopped Richards’ penalty shot.

Hainsey gave Richards the attempt by hooking him on a breakaway.

Gagne’s seventh goal this season gave the Flyers a 6-0 lead midway through the third. Glen Metropolit’s first goal came on the power play with 3:40 left.Notes: Thrashers rookie D Zach Bogosian, the No. 3 pick in this year’s draft, didn’t return after Philadelphia’s Darroll Powe slammed him into the boards midway through the second. ... In Atlanta’s end seconds later, Powe spent a few minutes on his back by the boards following a collision with Thrashers F Eric Boulton. Boulton and Philadelphia’s Riley Cote were both assessed unsportsmanlike penalties at 11:55. Powe and Bogosian both skated off the ice under their own power. ... Niittymaki’s previous shutout was a 1-0 victory at Florida on Dec. 30, 2007.