On January 27, 1979, in a game against the rival New York Rangers, Potvin delivered one of his signature hip checks to Rangers center Ulf Nilsson; Nilsson suffered a broken ankle on the play. In response, Rangers fans created the Potvin Sucks! chant which would be traded in exchange with the chant nineteen-forty (1940), for the year of the last Rangers cup before 1994. To this day, almost 20 years after Potvin retired, the "Potvin Sucks!" chant, punctuated by several shrill and derisive whistles, can still be heard at Rangers games.