Pedzisa mutsara unotevera: PaMitambo yeOlympic yeZhizha ya2008, Guido akapedza ari wechi20 mumakwikwi evarume emamita 100 achimhanya achidzokera kumashure uye ari wechi14 mumakwikwi evarume
Vakomana 4 × 100 metres medley relay.