Durban - South Africa won the toss and decided to bowl first in the second Twenty20 international against England at Kingsmead on Friday.
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South African captain Quinton de Kock said the possibility of dew on the outfield during the second innings was a factor in his decision.
England skipper Eoin Morgan said he was looking for a "marked improvement" after his team were beaten by one run in the first match in East London on Wednesday.
"Batting first gives us a first opportunity to impose ourselves," he said.
In the only change in the two teams, left-arm spinner Bjorn Fortuin replaced veteran fast bowler Dale Steyn in the South African side.