De Kock sustained a blow twice in the innings.
Dr Sanjiv Goenka, Chairman of the RPSG Group said, " I welcome all the players to the RPSG Durban family.
The 29-year-old wicketkeeper-batsman called it a day in test cricket in December 2021.
It all happened in the 5th over of the second innings, when de Kock nudged Harshal Patel's delivery and attempted to steal a quick single.
Markram has already missed the first three matches of the series after being tested positive for Covid-19 before the series opener in Delhi.
While Rishabh Pant confirmed that India are playing the same team as the first T20I, Bavuma informed that South Africa have made two changes.
Meanwhile, his wife was seen cheering for de Kock in the stands with their baby also with her.
Even the wicketkeeper Sam Billings wasn't quite expecting a short and quick ball from the usually slow bowler.
Although De Kock would have been well within his right to wait and see if the opposition captain asks for a referral, he chose to walk off.
Notably, QDK shockingly announced his retirement from Test format few days back, which could be where Elgar might be hinting towards.
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