The first time the Rangers and Flyers met in the playoffs was in the 1974 semifinals. In this series, the Flyers made history by becoming the first expansion team to win a series from an Original Six club (for a more in-depth look at this series, click here).
Despite the fact the Flyers finished the season 18 points ahead of the Rangers in the standings, almost nobody picked the Flyers to win the series.
The Rangers featured future Hall of Famers Brad Park, Jean Ratelle, Ed Giacomin and Rod Gilbert in their lineup while the Flyers had Bobby Clarke, Bill Barber and Bernie Parent.
The home team won all seven games in this physical and closely contested series, which featured more than its share of fights and more than 400 penalty minutes over the course of seven contests.
Game 7 was held at the Spectrum, and the Flyers set the tone early when Dave Schultz beat up Rangers' defenseman Dale Rolfe in front of the Rangers' bench in the first period. Rolfe was bloodied, but the Rangers did not come to his aid.
After the game, Flyers coach Fred Shero told reporters (as recalled by NHL.com) that after Schultz won that fight, the Rangers weren't as physical, and that made a difference.
Gary Dornhoefer scored twice, and the Flyers held on for a 4-3 win in Game 7 to advance to the Stanley Cup Final.
The Flyers then went on to defeat the Boston Bruins in six games to win their first title.
Shortly after this series, Rangers general manager Emile Francis traded his captain, Vic Hadfield, and the dismantling of a very good Rangers team got started.