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There's really no debate when it comes to the man who belongs at the top of this list.
Fred Shero patrolled the Philadelphia bench from 1971 to 1978 and is the franchise's all-time leader in games coached (554), wins (308), regular-season winning percentage (.642), postseason games (83) and playoff wins (48). Most importantly, he's also the only head coach in Flyers history to claim hockey's ultimate prize, capturing the Stanley Cup in back-to-back seasons in 1974 and 1975.
In seven seasons at the helm, Shero suffered only one losing campaign (his first in 1971-72) and followed that with five straight seasons with at least 40 victories from 1973 to 1978.
His most successful run came in a three-year window from 1973 to 1976 where the Winnipeg, Manitoba, native accumulated an astounding 152 wins, a stretch began with Shero claiming the very first Jack Adams award as the league's top coach.
Appropriately, "The Fog" was elected to the Hockey Hall of Fame earlier this year.