Tuhia he haere tonu mō tēnei wāhanga - I roto i te prelims wera o te 4x100-mita medley relay
I te ra tuawhitu, ka kaukau a Pieroni i te waewae freestyle o te relay, ka awhina i te relay kei roto ia ia, Hunter Armstrong, Andrew Wilson, me Tom Shields, ka mutu te tuawhitu o te katoa ka eke ki te whakamutunga. I te ra whakamutunga o te whakataetae, ko te rerenga whakamutunga te tuatahi, a ko nga mema katoa o te rerenga tuatahi me te rerenga whakamutunga i wikitoria i te mētara koura mo a raatau mahi.