Bavuma’s tally got here from 79 balls as South Africa scored 190–2 in reply to the Dutch whole of 189.
Aiden Markram scored an unbeaten 51 in an unbeaten 102-run partnership with Bavuma to offer South Africa victory with 20 overs to spare.
The Dutch have been put into bat on an unusually chilly day on the Highveld and, with altitude aiding them, made a superb begin, scoring 58 off 66 balls earlier than dropping their first wicket.
However the dismissal of Max O’Dowd, as he edged Quinton de Kock to Sisanda Magala, took away the momentum and the Dutch have been once more not in a position to get a worthwhile partnership going.
Opener Vikramjit Singh hit some spectacular sixes in his knock of 45 off 53 balls, whereas Teja Nidamanuru at quantity six scored 48 for the vacationers.
Spinner Tabraiz Shamsi took 3-25, supported by seamer Magala with 3-37, because the Dutch have been bowled out in 46.1 overs.
The win moved South Africa, who picked up 10 factors, to ninth place within the World Cup Tremendous League, which units up eight computerized qualifiers for the World Cup in India later this yr.
South Africa’s victory means Sri Lanka will drop out of the highest eight within the desk and must compete in a qualifying match in June in Zimbabwe, the place two extra World Cup locations are up for grabs.
If South Africa win their final qualifying ODI in opposition to the Dutch on the Wanderers on Sunday, the West Indies may also drop out of the highest eight and be pressured to compete in a qualifying match.
Solely Eire will then have an opportunity of computerized qualification, however will want three emphatic wins over Bangladesh after they host them at Chelmsford in Might to remain above South Africa within the Tremendous League standings.