Travis Zajac had the other goal for New Jersey (29-24-13), which won for the fifth in seven games to move within two points of the third-place Flyers in the tightly bunched Metropolitan Division.
Nicklas Grossman scored for the Flyers (33-25-7), who are 7-2-1 in their last 10 games. Philadelphia had a potential tying goal by Scott Hartnell disallowed by officials with 40.1 seconds remaining because it was determined that Hartnell pushed goalie Martin Brodeur into the net.
Marek Zidlicky set up Jagr for the decisive goal with a backhanded pass from behind the net. Jagr lifted it off goalie Steve Mason and just inside the near post from close range to put New Jersey ahead 2-1 with 12:18 left.
I've got a lot of experience and there's a lot of young guys. It's even making me excited a little more. It's kind of a new life. At my age, I feel like I know a lot of things what to do, but I just cannot do it anymore. It's a lot easier to tell them what to do because they've still got the legs and hands to do it. I just know things, but I cannot do them anymore.
— Jaromir Jagr after making his Panthers debut in a win against the Sabres on Saturday