On this date in 1981, the Flyers defeated the Calgary Flames at the Spectrum, 9-4. The win cut the Flames' lead to one game in their best-of-seven-games Quarterfinal series, three games to two.
Rick MacLeish opened the scoring with a power play goal at 1:08 of the first period. Brian Propp then scored the next three goals of the game to record the second natural hat trick in Flyers playoff history and to give the team a 4-0 lead. Bill Barber closed out the first-period scoring with an unassisted goal at 15:57 and the Flyers entered the first intermission with a 5-1 lead.
The Flyers scored two goals in both the second (Glen Cochrane and Tim Kerr) and third periods (Ron Flockhart and Barber) to make the final score, 9-4.
The five first-period goals tied the team record for most goals in one period of a playoff game and the nine goals in the game set a new team record for most goals in a playoff game.
Propp is just one of three players to record
a natural hat trick in a playoff game for the
Flyers (Rick MacLeish and Tim Kerr).