Tuhia he tomokanga mō tēnei wāhanga - I te 2004 Summer Olympics i Athens, riro ia i te mētara koura i roto i te 100 m freestyle
me nga hiriwa e rua i roto i te 200 m freestyle me te 4 × 100 m freestyle relay, e kaukau ana i te waewae punga i roto i te 46.79 koinei te waahanga tuarua tere i roto i te hitori. Na te whakaoti i mua i a Michael Phelps i te 200 m freestyle me te 4 × 100 m freestyle relay, ko ia anake te kaikawe i patu i a Phelps e rua nga wa i te whakataetae Orimipia. Ahakoa he rēhi te tuarua, he tere ake tana wehenga, he nui ake te wehenga, he iti ake hoki te wehenga o te whiu i te kapa US.