South Africa crushed Sri Lanka by 45 runs in the third and final Twenty20 International in Johannesburg to complete a series whitewash.
The result of the rain-affected match was decided on the Duckworth/Lewis/Stern method.
Sri Lanka were bowled out for 137 as they chased a reduced target of 183 in 17 overs following the rain delay at the Wanderers Stadium.
Andile Phehlukwayo claimed career-best figures of 4-24 in three overs, while man-of-the-match Dwaine Pretorius smashed an unbeaten 77 (42 balls) in South Africa's total of 198-2.
It completed a 3-0 series sweep for South Africa, who also won a one-day series 5-0.
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