Pedzisa mutsara unotevera: Hetty Balkenende (anonyorwawo kuti Hettie, akaberekwa muna 1939) aimbova mutambi wekushambira akasununguka uye mutambi wekushambira akabatana kubva kuNetherlands uyo akahwina menduru yesirivha mu4 × 100 m freestyle relay pa
1954 Makwikwi eEurope Emumvura. Muna 1955, akabatsira timu yeDutch kuisa rekodhi repasi rose muchiitiko chimwe chete; akakundawo mazita maviri emunyika (100 m uye 400 m freestyle), akaputsa zvinyorwa zviviri zvemunyika mumamita mazana mana akasununguka, uye rekodhi yenyika pamakumbo mazana masere nemakumi masere <unk> zvose mugore rimwe chete.