Pedzisa mutsara unotevera: Pamakwikwi eOlympics yeZhizha ya2012, de Beer akanga ari chikamu chechikwata cheSouth Africa mu
4 x 400 metres relay semifinal, kwaaifanira kumhanya muchikamu chokupedzisira. Mumutambo wechipiri Ofentse Mogawane akasangana neVincent Mumo Kiilu wekuKenya, zvichikonzera kuti South Africa ibve munhangemutange iyi. South Africa yakapfuudzwa kuenda kumagumo pakukumbira kuIAAF, nekuda kwekupindira kubva kumumhanyi weKenya uyo akadonhedza Mogawane. Vakapiwa mugwagwa wechipfumbamwe. Akamhanya muchikamu chechipiri chemakwikwi ekupedzisira uko South Africa yakapedza iri yechisere.