The Proteas survived the rain and a late comeback from the West Indies to edge the hosts by three wickets in Antigua on Sunday.
An unbeaten 82 from Shai Hope led the West Indies to a nine-wicket win over the United States in the T20 World Cup.
England thrashed the West Indies in front of their own fans in St Lucia, laying down a serious statement of intent at the ongoing T20 World Cup.
Nicholas Pooran fell just short of the first century of the T20 World Cup as West Indies overpowered Afghanistan by 104 runs in the final group match.
The Proteas' fixtures for the Super 8 stage of the 2024 T20 World Cup have been confirmed.
T20 World Cup co-hosts West Indies advanced to the Super Eight stage after beating New Zealand by 13 runs in Trinidad on Wednesday.