Ku sii qor faqradan - De Silva ayaa u soo baxday tartanka haweenka ee 50m ee qaabka xorta ah
Olombikada Xagaaga ee 2004 ee Athens, isagoo ka helay FINA meel caalami ah, waqtiga gelitaanka ee 28.48. Waxay la tartantay todobo kale oo dabaasha heerka afraad, oo ay ku jirto 31-jirka Melanie Slowing ee Guatemala. Waxay tartan ku gashay kaalinta toddobaad iyadoo laba tobnaad oo ilbiriqsi ka dambaysay Geraldine Arce oo reer Nicaragua ah 28.93. De Silva ayaa ku guuldareysatay inay u gudubto semi-finalka, maadaama ay gashay kaalinta 52aad guud ahaan 75 dabaasha maalintii ugu dambeysay ee horudhaca.