Mezue ahịrịokwu na-esonụ: Folker mere akụkọ ihe mere eme nke ya na 1999 Summer Universiade na Palma de Mallorca, Spain, ebe o nwetara ọla nchara na 100 m freestyle na 50.77, na-agwụ n'azụ Russia Denis Pimankov na Mauro Gallo nke Italy. Mgbe mba ya bụ Saụt Afrịka kwadoro asọmpi
N'egwuregwu niile nke Africa na Johannesburg n'afọ ahụ, Folker gbakwunyere ihe nrite abụọ ọzọ n'ọrụ ya n'ihu igwe mmadụ buru ibu: ọlaọcha na 50 m freestyle (22.83) na ọla nchara ọzọ na 100 m freestyle (50.61).