Pedzisa mutsara unotevera: MuRio de Janeiro, Worrell akaiswa pachinzvimbo chechina mumakwikwi e
100 metres butterfly asi vakakundikana kupinda mumakwikwi ekupedzisira mushure mekupedza vari 9 mu semi-finals. Akakunda menduru yegoridhe mumakwikwi e4 × 100 metres medley relay yekushambira mumatanho ekutanga.