It was an interesting clash between the two IPL heavyweights but Kolkata emerged winner as they bowled with more discipline with each and every bowler taking at least one wicket.
Kolkata Knight Riders recovered from regular blows to post a fighting 162 for four after electing to bat and then stopped Delhi to 144 for eight at Subrata Roy Sahara stadium.
It is for the first time that KKR have made it to the summit clash in five editions of the league so far.
Yusuf Pathan, who was going through a lean patch so far, struck form just at the right time for Kolkata as his uneaten 40 and a crucial 56-run stand with Laxmi Shukla (24 off 11) in just four overs helped his side cross 150-run mark.
The top three KKR batsmen - Gautam Gambhir (32), Brendon McCullum (31) and Jacques Kallis (30) batted well but could not convert the starts into big knocks.
Image: Kolkata Knight Riders Gautam Gambhir, left and Lakshmipathy Balaji, third right, celebrate the wicket of Delhi Daredevils Virender Sehwag during their Indian Premier League (IPL) cricket playoff match in Pune, India, Tuesday, May 22, 2012.
Scorecard | IPL 2012