Duncan akakwikwidza muMitambo yeOlympic yeChando yakatevera muna 1968, zvakare achikwikwidza mumitambo yose yevarume yeAlpine. Mukuburuka kwevarume
, akarambwa. Mumakwikwi evarume e giant slalom, akanga ane nguva yakabatanidzwa ye3:38.17 (+8.89) achimuisa panzvimbo yechi18. Mumutambo wevarume we slalom akakundikana kuenda kunhangemutange yokupedzisira.