Whakaotihia te rerenga e whai ake nei: I ngaro a Burkart i te whai waahi ki te oma i nga Orimipia o Seoul i te tau 1988 na te wharanga, engari i hoki mai me te tino pai o te 10.39 hēkona i te tau 1989. I taua tau ano ka wikitoria ia i te 100 m "B" waahanga whakamutunga i te
Ko te 1989 European Cup. I tohu ia i a Switzerland i te 1990 European Athletics Indoor Championships me te 1990 European Athletics Championships me te patu i tetahi atu rau mai i tana 100 m pai i taua tau. Kaore ia i puta i te 60 mita i te 1992 European Athletics Indoor Championships engari he wa pai rawa atu o tana mahi, i te whakatakoto i te 100 mita pai me te rekoata a motu o Switzerland mo te 10.32 hēkona me te 200 mita pai o 20.76 hēkona. Na tenei i uru atu ai ia ki tana whakataetae Olympic i te 34 o ona tau, a, ko ia te hauwhā o te whakamutunga i roto i nga whakataetae e rua. I tohu ia mo te 1993 World Championships in Athletics i te tau e whai ake nei, engari kaore i tiimata na te whara.