 Heunis akakwikwidza semutambi wechidiki uye akahwina menduru yebronze pa2007 African Junior Athletics Championships. Akanga ari semi-finalist pa2008 World Junior Championships muAthletics uye akamhanyirawo sechikamu chechikwata che4 × 100 metres relay. Akatora zororo kubva mumutambo uyu kwemakore mana uye akazviratidza zvakare mumatanho epamusoro e2012 African Championships muAthletics, kwaakauya wechinomwe mumutambo wekupedzisira. 