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.
India Premier League outfit Rajasthan Royals have announced that former India star Rahul Dravid will no longer be the team's head coach after the two parties agreed to part ways.
Ravichandran Ashwin has announced his retirement from the Indian Premier League (IPL), making the former India spinner available for various T20 league around the world.
MS Dhoni's future in the Indian Premier League remains shrouded in uncertainty after the Chennai Super Kings icon stopped short of announcing his retirement during a recent public appearance.
Royal Challengers Bengaluru sealed their maiden Indian Premier League (IPL) title after beating Punjab Kings by six runs in the final at Ahmedabad on Tuesday.
