Kammala wannan jumla: Shekaru takwas bayan ya yi gasa a wasannin Olympics na farko, Roberts ya yi iyo a karo na uku a gasar Olympics ta
100 m freestyle, a matsayin mai shekaru 22, a gasar Olympics ta 2000 a Sydney. Ya sami FINA B-yanke na 52.59 daga Wasannin Duk Afirka. Ya kalubalanci wasu 'yan wasa bakwai a zagaye na uku, ciki har da George Bovell mai shekaru 16 na Trinidad da Tobago. Da yake fitowa daga na shida a kan tsayin farko, Roberts ya ɓace a cikin shimfiɗar don karɓar saiti na bakwai a cikin lokaci na 53.91, kawai 1.32 seconds a ƙasa da ƙimar shigarsa. Roberts ya kasa ci gaba zuwa wasan kusa da na karshe a karo na uku na wasannin Olympics, yayin da ya sanya na sittin da daya a gaba ɗaya a cikin prelims.