Tatjana Smith, South Africa's most decorated Olympian, switches allegiance to the Netherlands. CAPE TOWN, South Africa (AP) — South Africa’s most decorated Olympic athlete Tatjana Smith is changing nations to compete for the Netherlands, a decision she acknowledged Tuesday “may disappoint. Nov 10 (Reuters) - South Africa's twice Olympic gold medallist Tatjana Smith is changing her allegiance to the Netherlands, the 29-year-old said on Tuesday, citing her Dutch heritage and.