For those not familiar with the history, the Philadelphia Flyers took on the Soviets several times in the 1970s when they were in their Stanley Cup prime. It was common for the Soviet team, CSKA Moscow, who were regarded as the best in the world at the time, to play North American tours and not-so-friendly games against NHL rivals. In this particular contest, deemed the "Flyers-Red Army game," the Broad Street Bullies showed exactly why they earned their nickname with heavy hitting prowess that saw the Soviets quit and leave the ice while still in a scoreless first period.
Upon walking off, Flyers' Chairman Ed Snider told the Soviets to return to the ice and finish the game, which was being broadcast to an international audience, or the Soviet Hockey Federation would not get paid the sum of money to which was previously agreed upon.
They eventually complied and lost 4-1. USA, USA, USA!