Matt Read scored a short-handed goal and added an assist, and Mason made 30 saves for Philadelphia (2-7), which snapped a four-game losing streak. The Flyers are still off to their worst start through nine games.
New York's Cam Talbot was solid in net in his NHL debut, making 25 saves in place of injured regular Henrik Lundqvist, but the Rangers (2-6) lost for the fifth time in six games. They have one game left on their season-starting, nine-game road trip before hosting their home opener on Monday.
The Rangers, who got a goal from Brad Richards, thought they had gotten even at 2, but a video replay determined that J.T. Miller kicked the puck into the net.