Tuhia he haere tonu mo tenei irava - I te 2004 Summer Olympics i Athens, i tohu ano a Tregubova mo te 50 m freestyle
mā te whakaiti i tētahi tapahi B-FINA o te 26.90 mai i te Russian Open Championships i Moscow. I te kaukau i te wera rite ki a Sydney, i eke ia ki te waahi tuarua i runga i a Roshendra Vrolijk o Aruba mo te 0.03 o te hēkona, i tua atu i tana wa whakauru mo te 28.40. Kaore a Tregubova i eke ki nga hawhe whakamutunga, i te mea i tuu ia i te wha tekau ma waru o nga kaikawe 75 i te ra whakamutunga o nga whiringa toa.