The other SA bowlers, especially Phehlukwayo (1/60) and Tabraiz Shamsi (0/43), would have hoped for a better day in the office.
England's bowlers weren’t going to let the victory slip through their fingers and they showed their intent early in SA’s innings.
Miller’s men didn’t have the best start to their big chase as, like England, lost openers Quinton de Kock (2) and Rilee Rossouw (4) early — in the second over as they both fell to Reece Topley and SA were 7/2.
Klaasen (20) and Reeza Hendricks (57) did their best to get SA back on track as their partnership produced 65 before the former was sent to the stands by Adil Rashid in the eighth over.
Hendricks also fell to Ali in 10th over. Stand-in skipper Miller was lost on the 14th over contributing just eight runs as it became clear that it would take something miraculous for SA to win.
Stubbs, with his 72 off 28 deliveries, lifted SA's slim hopes before he fell to Richard Gleeson (3/51), but the game was over as a contest before that for Proteas, who needed 85 in the final five overs to snatch victory.
Gleeson also claimed the wickets of Rabada for a duck and Phehlukwayo (22).
England take a 1-0 lead into the second T20I in Cardiff on Thursday (7.30pm, SA time).
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