Nyorai zvekuenderera mberi kwechikamu chino - Ngouabi akakwikwidza chete mumakwikwi evarume emamita zana akasununguka
paMitambo yeOlympic yeZhizha ya2000 muSydney. Akagamuchira nzvimbo yeUniversality kubva kuFINA, munguva yekupinda ye59.50. Akadenha vamwe vatambi vatanhatu mumakwikwi maviri, kusanganisira vane makore gumi nemashanu Ragi Edde weLebanon naDawood Youssef weBahrain. Akazvibvisa pachigaro chechitanhatu nenguva 1:00.39, sekondi imwe chete pasi pemwero wake wekutanga uye 6.84 sekondi kumashure kwemutungamiri Gregory Arkhurst wekuCôte d'Ivoire. Ngouabi akakundikana kuenda kumasemifinal, sezvo akaisa makumi matanhatu nemasere mumakwikwi ekutanga.