<prompt> Pedzisa mutsara unotevera: Pamakwikwi e2008 Summer Olympics muBeijing, Rubacek akakwanisa kechipiri mumakwikwi evarume e100 m butterfly, nekubvisa FINA B-cut ye53.71 kubva ku  <response>: Makwikwi eEurope 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. 