Chasing 163, Mumbai Indians could manage only 122/7 in their 20 overs, as the KKR bowlers, especially Sunil Narine maintained a tight line and choked the Mumbai batsmen.
Sunil Narine proved his worth once again, taking 4/20 in his 4 overs, while Morne Morkel (1/16 from 4 overs) and Piyush Chawla (1/15 from 3 overs) were extremely economical.
The Mumbai openers Aditya Tare and Michael Hussey could not get off to a brisk start. Hussey fell for 3 in the 5th over and Tare for 24 in the 8th over. At this juncture Mumbai has just scored 40 runs.
Rohit Sharma (27 off 20) and Ambati Rayudu (48 off 40) then put up a 61-run third-wicket stand, but the increasing required rate forced them to take risks, and both perished in the attempt.
The much-celebrated Kieron Pollard and Corey Anderson could not accelerate the scoring, and neither could Harbhajan Singh. Pollard remained unbeaten on 6 off 8 balls as Mumbai Indians finished at just 122/7.
Earlier, Jacques Kallis made 72 and Manish Pandey 64 as Kolkata Knight Riders reached a competitive 163 for five in 20 overs against Mumbai Indians in the opening match of the Indian Premier League (IPL) at the Sheikh Zayed Stadium here Wednesday.
Kallis smashed five fours and three sixes in his whirlwind 46-ball knock while Pandey hit six fours and two sixes in his 53-ball innings.
Lasith Malinga was again the pick of the Mumbai Indians bowlers, bagging four for 23.
However, it mattered little in the end as Mumbai made a hash of their batting.