South Africa, led by Temba Bavuma, defeated New Zealand by 190 runs.
New Zealand struggled early in their chase.
Bavuma started strong but was dismissed for 24 runs.
Quinton de Kock scored 114 runs, becoming the first South African to reach 500 runs in World Cup history.
Rassie van der Dussen contributed 133 runs.
South Africa set a total of 357/4 in 50 overs.
South Africa's bowlers, led by Keshav Maharaj, dominated New Zealand.
South Africa now tops the World Cup standings with six wins and one loss.
This victory signifies South Africa's determination to shed the "chokers" label.