Mezue ahịrịokwu na-esonụ: Na 1975, de Leeuw kwughachiri dị ka onye mmeri ọlaọcha na
European Championships na Copenhagen, ebe Errath ritere ọlaedo ọzọ. Ọ ghọrọ onye mmeri ụwa na 1975 World Championships na Colorado Springs, Colorado, na-emecha n'ihu Hamill na Errath, ma bụrụ onye a họpụtara na 1975 Dutch nwanyị na-eme egwuregwu nke afọ.