The Blueshirts were victorious in the only meeting of the season against the Flyers, a 5-1 win back on Jan. 16 at The Garden.
The Flyers are right in the thick of the playoff race in the Metropolitan Division, jockeying for position at the top of the division with Washington, Pittsburgh and the Devils.
Philadelphia comes into Sunday's game with five wins in its last six games, including a 2-1 overtime win Friday night against the Blue Jackets in Columbus.
Claude Giroux leads the club with 66 points in 58 games, followed closely by Jakub Voracek's 65. Sean Couturier is having a breakout offensive season with 29 goals and 29 assists for 58 points, all of which are career-highs.
No. 1 netminder Brian Elliott is out long-term following surgery on a core muscle, paving the way for Michal Neuvirth to man the net. So far, so good, as the netminder has three wins in his last four games, with the only blemish a shootout loss to the Devils on Tuesday.