Pedzisa mutsara unotevera: Jans Koster (akaberekwa muna 1938) mutambi akarega basa wokuNetherlands. Akakunda menduru yegoridhe pa
1958 European Aquatics Championships (400 m) uye akaisa mbiri dzeEurope uye mbiri dzenyika mu1500 m muna 1956<unk>1957. Pana 9 March 1960 akaroora Ben Hulsegge.