Hashim Amla scored a century as South Africa recorded a 72-run victory over New Zealand in their second one-day international.
Having been kept on the field for longer than intended, South Africa eventually saw off their opponents at the Bay Oval to win the series with an unassailable 2-0 lead.
South Africa were asked to bat first after losing the toss, and Amla quickly found his form on the way to a crucial knock of 119 from 135 balls.
The opener was well supported by Faf du Plessis, who struck a fluent 67, while AB de Villiers contributed with 37 from just 25 deliveries.
Amla's dismissal in the 45th over opened the door for the Kiwis as the hosts fought back to restrict the Proteas to 282-9 from their 50 overs.
However, New Zealand struggled in the early stages of their reply as their top six all departed without reaching 30 in Mount Maunganui.
Imran Tahir and Dale Steyn both took two wickets, while De Villiers claimed his first two victims in ODI cricket to pile further misery on the hosts.
Luke Ronchi - who was chasing down a maiden hundred - offered some resistance by clocking up 79 runs, until eventually slicing the ball which allowed De Plessis to collect a well-judged catch.
The sides face off once more on Sunday in the third ODI.