<prompt> Nyorai kuenderera mberi kweiyi ndima - Kumitambo yeOlympic yezhizha ya2008 muBeijing, Rubacek akakodzera kechipiri mumakwikwi evarume emamita zana ekubhururuka  <response>: , nekubvisa FINA B-kucheka kwe53.71 kubva kuEuropean Championships muEindhoven, Netherlands. Akadenha vamwe vanoshambira vanomwe muchikamu chechina, kubatanidza vakakunda makwikwi eOlympic katatu Ioan Gherghel wokuRomania naJuan Veloz wokuMexico. Rubacek akamhanya kunzvimbo yechina nemashanu ezana remasekondi 0.05 pamberi peVeloz, achiputsa rekodhi nyowani yeCzech yemasekondi 53.53. Rubacek akakundikana kuenda kumasemifinal, sezvo akaisa makumi mana nemaviri kubva pavanoshambira makumi matanhatu nevatanhatu mumatanho ekutanga. 