Kammala wannan jumla: A ranar 13 ga watan Agusta, a cikin
4 × 100 mita medley relay, Phelps ya ƙare aikinsa tare da wata lambar zinare, ta 23 a wasannin Olympics da lambar yabo ta 28 a gasar Olympics. Tare da Ryan Murphy, Cody Miller, da Nathan Adrian, suna yin iyo a matsayin ƙafar malam buɗe ido na medley, sun karya rikodin wasannin Olympics, kuma sun sami lambar zinare ta 1001 ta Amurka a duk lokacin wasannin Olympics, bisa ga USOC. Phelps ya sake yin ritaya daga gasar yin iyo bayan wasannin Olympics na Rio.