Proteas coach Mark Boucher has welcomed the return to form of Quinton De Kock after his dominant display against Sri Lanka on Tuesday.
In a dead rubber third and final T20 encounter in Colombo, the hosts set South Africa a meagre 121-run target.
De Kock scored an impressive 59 off 46 balls, while Reeza Hendricks added 56 off 42 balls to help the Proteas to a 10-wicket victory.
Speaking to reporters after the match, Boucher said he expected De Kock to play a significant role in next month's T20 World Cup in the United Arab Emirates and Oman.
"Quinny has been in great form. He has obviously gone through a bit of a tough time after Pakistan, but he's come in and has been fantastic in the team environment," Boucher said.
"We all know the player that Quinny is. So, you can't keep a player like that down for too long. I think he is in a very happy space at the moment. We missed him in the one-day setup.
"I am happy we gave him a little bit of time off after The Hundred to rest up a little bit, spending some time playing golf or whatever he does.
"Then he came in and rewarded us with that break as well. He's a big name going into the World Cup... him being in the form that he is... and good to see that he's carrying his bat through as well. He is showing a lot of responsibility, which is fantastic.
"From a coache's perspective, it's great to see him in form. He'll be a big name for us in the World Cup."