 Ferreyra akaita chikwata chake chekutanga cheArgentina, semakore makumi maviri nematatu, kumaOlympics ezhizha ra2000 muSydney, achikwikwidza mumitambo miviri yekushambira. Mumakwikwi emamita 100 ekumhanya pachipfuva, Ferreyra akapedzisa kupisa kwechishanu kusvika kunzvimbo yekupedzisira uye makumi mashanu nematatu akazara neasingasviki 0.19 yechipiri kumashure kweBelaruss Aliaksandr Hukau muna 1:05.75. Akaisawo gumi nemasere senhengo yechikwata cheArgentina mu4 × 100 m medley relay 3:43.61. Achishandira pamwe naEduardo Germán Otero, Pablo Martín Abal, naJosé Meolans, Ferreyra akahwina mutsoka wechipfuva muchikamu che 1:02.73. 