The former Proteas captain received no real support from the rest of the batting with only Delhi skipper Axar Patel striking 43 as his team could reach 190-9 chasing a target of 205.
Kolkata's West Indian spinner Sunil Narine was the chief destroyer for his team with figures of 3-29 while fellow slow-bowler Varun Chakravarthy took 2-39.
Earlier, the Knight Riders reached a total of 204-9 in their 20 overs thanks mainly to Angkrish Raghuvanshi who hit 44 off 32 balls while Rinku Singh smashed 36 off 25 deliveries.
It was the Knight Riders' fourth win in 10 matches this campaign and they are seventh in the standings while Delhi are fourth ater slipping to their fourth defeat.
James Vince struck a fluent 75 to lead Joburg Super Kings to 187 for six, but persistent lightning forced the SA20 clash against Paarl Royals to be abandoned at the Wanderers, with the sides sharing the points.
Bangladesh has imposed an indefinite ban on the broadcast and promotion of the Indian Premier League following the controversial removal of fast bowler Mustafizur Rahman from Kolkata Knight Riders ahead of the 2026 season.
David Miller, Lungi Ngidi and Anrich Nortje were all bought for more than R3million at the Indian Premier League mini-auction, while Quinton de Kock also picked up a new deal.
Former Proteas captain Faf du Plessis has confirmed that he will not put his name in the auction for the 2026 Indian Premier League, and has instead decided to play in the Pakistan Super League.
