Dawid Malan hit a magnificent 99 not out as England completed a 3-0 series victory over South Africa in Cape Town to go top of the Twenty20 rankings.
Chasing 192, Malan and Jos Buttler shared 167 to power England to a nine-wicket win with 14 balls left.
Buttler made an unbeaten 67 off 46 balls and Malan faced only 47 as they hit a combined 14 fours and 10 sixes.
Earlier, Rassie van der Dussen’s unbeaten 74 and Faf du Plessis’ 50 not out helped South Africa post 191-3.
Victory took England above Australia at the top of the International Cricket Council (ICC) rankings, although Justin Langer’s side could return to number one if they win their series against India starting on Friday.
The game at Newlands was also notable for England analysts on the dressing room balcony using a coded letter and number system to pass tactical advice on to captain Eoin Morgan during the South Africa innings.
The England and Wales Cricket Board said the move had been approved by the ICC and was “intended as a live informational resource that the captain may choose to use or ignore as he wishes”.
A three-match one-day series between England and South Africa starts in Cape Town on Friday.
South Africa will be without pace bowler Kagiso Rabada because of the adductor strain that ruled him out of the final T20.