Kammala wannan jumla: Vosloo ya fito ne daga Pietersburg kuma ya zama mai sana'a a 1997. Ya kasance memba na tawagar 'yan wasan Afirka ta Kudu da suka lashe lambar azurfa a gasar cin kofin duniya.
Wasannin Afirka na 1999. A lokacin aikinsa ya taka leda a kan Challenger da Futures circuits, tare da nasararsa ciki har da 'yan wasa James Blake da Robin Söderling. Ya kuma shiga cikin cancantar a duk manyan wasannin Grand Slam guda huɗu. A shekara ta 2002 ya lashe gasa biyu na Challenger kuma ya wakilci tawagar Davis Cup ta Afirka ta Kudu a wasan da suka yi da Yugoslavia a Belgrade. A cikin gasar cin kofin Davis ya buga wasanni biyu, wanda ya rasa duka a cikin saiti hudu, ga Dušan Vemić da Vladimir Pavicevic.