South Africa made 78-4 against Sri Lanka in a group C match at Hambantota on Saturday after rain curtailed the affair to a seven-over per side contest.
Sri Lanka were without their ace spinner Ajantha Mendis, who took 6-8 in their win over Zimbabwe, after suffering from a side strain.
Heavy rain delayed the start by two and a hours as a sell-out 35,000 crowd waited anxiously for action, which finally started at 6:00pm (1230 GMT) local time.
Irrespective of the result of this match, both South Africa and Sri Lanka have qualified for the Super Eight rounds after beating Zimbabwe in their opening matches.
South Africa 78-4 in seven overs (AB de Villiers 30)