Buuxi weedhan soo socota: Burkart wuxuu lumiyay fursad uu ku ordo Ciyaaraha Olombikada ee Seoul 1988 dhaawac awgiis, laakiin wuxuu dib u soo kabsaday isagoo leh shaqsi ahaan ugu fiican 10.39 ilbiriqsi 1989. Isla sanadkaas wuxuu ku guuleystay 100 m "B" qeybta ugu dambeysa ee
Koobka Yurub ee 1989. Wuxuu Switzerland u matalayay 1990 European Athletics Indoor Championships iyo 1990 European Athletics Championships wuxuuna ku garaacay boqolkiiba 100 m ugu fiican sanadkaas. Wuxuu ku guuldareystay inuu ka soo baxo 60 m kulaylka 1992 European Athletics Indoor Championships laakiin wuxuu lahaa xilli ciyaareedkii ugu fiicnaa ee xirfadiisa, isagoo dhigay 100 m ugu fiican iyo rikoodhka qaranka Switzerland ee 10.32 ilbiriqsi iyo sidoo kale 200 mitir ugu fiican ee 20.76 ilbiriqsi. Tani waxay ku kasbatay kulankiisii ugu horeeyay ee Olombikada isagoo 34 jir ah wuxuuna ahaa afar dhamaadka labada orod. Wuxuu u qalmay Koobkii Adduunka ee Ciyaaraha fudud ee 1993 sanadkii xigay, laakiin ma uusan bilaabin dhaawac awgiis.