<prompt> Pedzisa mutsara unotevera: PaMitambo yeOlympic yeZhizha ya2004 muAthens, Tregubova akakwanisazve  <response>: 50 m freestyle nekupfuura FINA B-cut ye26.90 kubva kuRussian Open Championships muMoscow. Achishambira mumvura yaipisa sezvaiita Sydney, akahwina nzvimbo yechipiri pamusoro peRoshendra Vrolijk wokuAruba nechidimbu che0.03 chechipiri, kunze kwenguva yake yokutanga ye28.40. Tregubova akakundikana kuenda kumasemifinal, sezvo akaisa makumi mana nesere kubva pavanoshambira makumi manomwe nevashanu pazuva rekupedzisira rekutanga. 