 Nyorai mberi kweiyi ndima - Burkart akarasikirwa nemukana wekumhanya kumaOlympics eSeoul muna 1988 nekuda kwekukuvara, asi akadzoka aine nguva yake yakanakisa yemasekondi 10.39 muna 1989. Gore irorowo akakunda 100 m B chikamu chokupedzisira pa 1989 European Cup. Akamirira Switzerland pa1990 European Athletics Indoor Championshipsuye 1990 European Athletics Championships uye akarova imwe zana kubva pa100m yake yakanakisisa gore iroro. Akatadza kubuda mumakwikwi emamita makumi matanhatu pa 1992 European Athletics Indoor Championships asi aive nemwaka wakanakisa wekunze pabasa rake, achiisa 100 m yakanakisa uye rekodhi yenyika yeSwitzerland yemasekondi 10.32 pamwe ne200 metres yakanakisa yemasekondi 20.76. Ikoku kwakamuwanira kutanga kwake kweOlympic pazera ramakore 34 uye akanga ari mutevedzeri wechina mumakwikwi ose ari maviri. Akakwanisa kupinda mumakwikwi eWorld Championships muna 1993 mumutambo weAthletics gore rakatevera, asi haana kutanga nekuda kwekukuvara. 