Paarl - South Africa won the toss and opted to bat in the first one-day international against Australia at Boland Park on Saturday.
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The Proteas included two new one-day caps in opening batsman Janneman Malan and top-order batsman Kyle Verreynne.
They made five changes from the team that was beaten by 97 runs in the third and final Twenty20 international in Cape Town on Wednesday.
"We've got a lot of changes," said South African captain Quinton de Kock.
"It's a great time to give some of the youngsters some experience."
He said he expected the pitch to be good for batting but he expected it to "slow up" later.
"It looks a pretty dry surface," said Australian captain Aaron Finch.
Play was due to get under way in hot, windy weather with haze in the air from a nearby bushfire which obscured the view of mountains which make the ground one of the most picturesque in South Africa.
South Africa: Quinton de Kock (captain, wkt), Janneman Malan, Temba Bavuma, Kyle Verreynne, Heinrich Klaasen, David Miller, Andile Phehlukwayo, Keshav Maharaj, Anrich Nortje, Lungi Ngidi, Tabraiz Shamsi
Australia: Aaron Finch (captain), David Warner, Steve Smith, Marnus Labuschagne, Mitchell Marsh, Alex Carey (wkt), D'Arcy Short, Pat Cummins, Mitchell Starc, Adam Zampa Josh Hazlewood
Umpires: Adrian Holdstock (RSA), Nigel Llong (ENG)
TV umpire: Richard Illingworth (ENG)
Match referee: Andy Pycroft (ZIM)