|England 176-5: Capsey 50 (37), Brunt 38* (23), Jones 36* (23)|
|South Africa 141-4: Wolvaardt 41* (33), British 38 (37)|
|England won by 26 runs|
England are one win away from the Commonwealth Games semi-finals after a 26-run win over South Africa.
Alice Capsey, 17, made 50 off 37 balls – her maiden Twenty20 international half-century – Katherine Brunt an unbeaten 38 and Amy Jones 36 not out in a total of 167-5 at Edgbaston.
South Africa posted 141-4 despite Laura Wolvaardt’s unbeaten 41.
England, who lead Group B with two wins, will reach the semi-finals if New Zealand beat Sri Lanka on Tuesday.
England will qualify as group winners if they beat New Zealand on Thursday.
South Africa need an improbable run of results to reach the final four.