 Ramba uchinyora ndima iyi - Pamutambo weWorld Cup wa2002 muZurich, Kozlova akahwina menduru yake yokutanga yenyika yose somuAmerica, achihwina menduru yebronze mumakwikwi echikwata. Nokuda kweWorld Aquatics Championships ya2003muBarcelona Kozlova akapinda mumitambo mitatu. Nomumwe wake mutsva Alison Bartosik, akawana nzvimbo yechina mumakwikwi evanhu vaviri. Yakanga iri muBarcelona kuti Kozlova akahwina menduru yake yekutanga yemakwikwi epasi rose nemenduru yesirivheri mumutambo wakasununguka wechikwata, uye menduru yendarira mumakwikwi echikwata chehunyanzvi. Pamitambo yePan American ya2003 Kozlova akahwina menduru mbiri dzegoridhe; naBartosik akahwina makwikwi evanhu vaviri, uye vose vari vaviri vaive chikamu chechikwata cheU.S. chakahwina makwikwi echikwata. 