Kammala wannan jumla: Ghislain an zaba shi ne a matsayin ajiya don
maza 4 × 400 m relay a gasar Olympics ta 2008 a Beijing. Daga karshe an kira shi zuwa ga tawagar 'yan wasa na kasa a farkon zagaye na zagaye, lokacin da abokin aikinsa Kristof Beyens ya yanke shawarar janyewa daga gasar don mayar da hankali kan tserensa na mita 200. Ghislain ya kafa tarihin kasa mai ban mamaki na 3:00:67, tare da abokan wasansa Cedric van Branteghem da tagwaye Kévin da Jonathan Borlée, tare da kammala na uku a zagayen farko, wanda ya ba su damar zuwa zagaye na karshe. A rana mai zuwa, shi da tawagarsa sun kasance na biyar a wasan karshe, tare da wani rikodin rikodin lokaci na 2: 59.37.