Giroux got the game's first goal in the first period and the Flyers fired in four more in the second, running up a 5-0 lead en route to the easy victory.
Lauri Korpikoski notched a goal late in the second period and Nikolai Zherdev scored in the third for the Rangers.
Philadelphia goalie Martin Biron was credited with 35 saves. New York's Henrik Lundqvist and Steve Valiquete combined for 19.
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