The Proteas took a step closer to automatic World Cup qualification after a comprehensive eight-wicket victory over the Netherlands in Benoni on Friday.
New Zealand beat Sri Lanka by six wickets in Friday's third one-day international, ending the visitors' hopes of qualifying directly for the World Cup this year.
Proteas wicket-keeper batsman Quinton de Kock has vowed they will make every effort to qualify for the ICC Men's Cricket World Cup in India in October.
Proteas T20 captain Aiden Markram refused to single out any particular moment or mistake that might have cost the team the match and series against West Indies at Wanderers on Tuesday.
West Indies held their nerve at the death with the ball and bat to beat the Proteas by seven runs in the third and deciding T20I at the Wanderers on Tuesday.
The Proteas have named a full-strength squad for the two ODIs against the Netherlands that starts in Benoni on Friday.