<prompt> Bhala ukuqhubeka kwalesi sigaba - Kusihlwa ngosuku lwesithupha, uDressel wabopha irekhodi lama-Olympic emjahweni wezimvemvane wamamitha angu-100  <response>: ngesikhathi sika-50.39 emidlalweni yokuqala. Lo mlando wokuqala wama-Olympic emncintiswaneni wokugijima ngamamitha ayikhulu ngebhabhathane uDressel awubeka ngemva kwamahora angaphansi kwayisishiyagalolunye ebeke umlando wama-Olympic emncintiswaneni wokugijima ngamamitha ayikhulu ngesitayela samahhala. Emdlalweni wesibili wama-semifinal we-100 metres butterfly ngosuku lwesikhombisa, uDressel wabhukuda ngo-49.71 futhi waphula irekhodi lama-Olympic elingu-50.31 likaKristóf Milák elibekwe emdlalweni wokuqala wama-semifinal. Kamuva ngosuku lwesikhombisa, uDressel wabhukuda ngemizuzwana engamakhulu amathathu ukusuka ekubekeni irekhodi elisha lama-Olympic kuma-prelims we-50 metres freestyle nesikhathi sakhe esingu-21.32 futhi wadlulela kuma-semifinals ebekwe kuqala. 