Kammala jumla mai zuwa: A Wasannin Olympics na 2016, Miller ya lashe lambar tagulla a tseren tseren mita 100 na maza, inda ya kafa tarihin Amurka na tseren mita 100 na maza tare da lokaci na 58.87 seconds. Miller ya kuma lashe lambar zinare a gasar
maza 4 × 100 mita medley relay, a cikin abin da ya yi da breaststroke kafa na karshe.