South Africa have won the toss and elected to field against Sri Lanka in tonight's late game in St Lucia - you can listen to Test Match Special commentary on BBC Radio 5 live sports extra via the button at the top of this page.
Earlier today, England's campaign finally got under way as Anya Shrubsole and Nat Sciver reduced Bangladesh to 3-2 in the first three overs, and the Tigers could only reach 76-9 from their 20 overs.
Ayasha Rahman top-scored with 39, including three sixes. Kirstie Gordon, on her England debut, took 3-16 from her four overs to earn the player of the match award.
England lost Danni Wyatt first ball and Tammy Beaumont soon after, but Amy Jones and Nat Sciver added 38 for the third wicket.
A 30-minute rain delay left England needing only nine more runs from seven overs - which captain Heather Knight needed only three deliveries to knock off.
They are back in action against South Africa on Friday.