Rubuta ci gaba don wannan sakin layi - A rana ta huɗu na gasar, Laraba, 16 ga Yuni, 2021, Dressel ya kasance na 5 a cikin dukkan zafin jiki na farko a cikin mita 100 na wasan motsa jiki mai zaman kansa a 48.25 kuma ya ci gaba zuwa wasan kusa da na karshe. A wasan kusa da na karshe a yammacin wannan ranar, Dressel ya zama na farko da lokacin 47.77 kuma ya ci gaba zuwa wasan karshe. A rana ta biyar, 17 ga Yuni, 2021, Dressel ya lashe tseren tseren mita 100 tare da lokacin 47.39 kuma ya cancanci shi ga tawagar 'yan wasan Olympics ta Amurka a tseren mita 100
da kuma 4 × 100 m freestyle relay don Wasannin Olympics na bazara na 2020. Ya yi daidai da rikodin US Open da kuma gasar zakarun Turai don mita 100 na 'yanci tare da yin iyo. Wannan ya nuna wasannin Olympics na biyu da Dressel ya cancanci shiga.