East London - England won the toss and decided to bowl in the first Twenty20 international against South Africa in East London on Wednesday.
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Captain Eoin Morgan said the decision to bowl first was partly because of unfamiliarity with conditions at Buffalo Park on a windy evening.
England stars Ben Stokes, Jos Buttler and Mark Wood returned to action after being rested during the previous three-match one-day international series, while fast bowler Dale Steyn was set for his first South Africa appearance since March.
"It's great to have him back, he adds a lot of value," South Africa captain Quinton de Kock said of Steyn.
Both captains said the three-match series was the start of their build-up to this year's T20 World Cup, which is being held in Australia in October and November.
South Africa: Quinton de Kock (captain/wicket-keepr), Temba Bavuma, Rassie van der Dussen, JJ Smuts, David Miller, Dwaine Pretorius, Andile Phehlukwayo, Beuran Hendricks, Tabraiz Shamsi, Dale Steyn, Lungi Ngidi
England: Jason Roy, Jos Buttler(wicket-keeper), Jonny Bairstow, Eoin Morgan (captain), Ben Stokes, Joe Denly, Moeen Ali, Tom Curran, Adil Rashid, Chris Jordan, Mark Wood