Rubuta ci gaba don wannan sakin layi - Shekaru takwas bayan ya yi gasa a gasar Olympics ta farko, Roberts ya yi iyo a karo na uku a cikin mita 100 na 'yanci
, a lokacin da yake dan shekara 22, a wasannin Olympics na 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.