Nyorera kupfuurira kweiyi ndima - Khalifa akakwikwidza kuMauritania mumitambo miviri yeOlympic yezhizha, kutanga kumaOlympic ezhizha ra1988, kwaakakwikwidza mumamita zviuru zvishanu uye akapedza gumi nemanomwe muchikwata chake, asi haana kukwanisa kuenda kumutambo unotevera. Makore mana gare gare pa 1992 Summer Olympics akapinda munhangemutange yemarathon
asi haana kupedza kosi yacho.