<prompt> Ronald Kroon 17 Gunyana 1942, Amsterdam 12 Chikunguru 2001, Huizen aiva wokuNetherlands freestyle mutambi uyo akahwina menduru mbiri dzendarira panguva 1962 European Aquatics Championships  <response>: . Akakwikwidzawo kumaOlympics eZhizha a1960 na1964 aine kubudirira kwakanakisa kwenzvimbo yechisere mu4 × 100 metres medley relay. Pakati pa1960 na1964 akanga ari mukwikwidzi wenyika kanokwana kana uye akaisa 12 zvinyorwa zvenyika mumakwikwi emamita 100 akasununguka. Akanga ari mutambi wokutanga wokuNetherlands kushambira mamita 100 mumasekonzi 55. 