Captain Gautam Gambhir struck a solid 63 to take Kolkata Knight Riders to a comfortable 5-wicket victory over two-time defending champion Chennai Super Kings in the Indian Premier League Monday. Gambhir hit one six and six fours in his 52-ball knock as Kolkata scored 140-5 in 19.4 overs after restricting Chennai to 139-5 at the Chidambaram Stadium. Apart from Gambhir, South African Jacques Kallis also contributed to the win. After bagging the key wickets of Suresh Raina and Dwayne Bravo, he produced a useful knock of 26 and figured in a 70-run second-wicket stand with Gambhir. Gambhir, who struck 93 in Kolkata's last game against Royal Challengers Bangalore, was out in the penultimate over when he was trapped lbw by West Indian allrounder Dwayne Bravo with a slower delivery. But local favorite Debabrata Das produced a four-ball cameo of 11 and scored the winning four off Ravichandran Ashwin to complete the win with just two deliveries remaining. “We did a good job restricting them to 139,” Gambhir said after being named Man of the Match. Earlier, Gambhir rotated the bowlers well to restrict Chennai on a slow pitch. South African Faf du Plessis (3) was dismissed early by Brett Lee while his Australian opening partner Michael Hussey (18) was run out as Chennai struggled to 32-2 in five overs. But left-hander Raina ended a lean patch by scoring 44 off 34 balls with one six and four fours and captain Mahendra Singh Dhoni made an unbeaten 34 off 30 balls with only two fours. The win ensured Kolkata stays in second place with six wins, three losses and a no-result from 10 games. Chennai has four wins, five losses and a no-result. Scores: Kolkata Knight Riders 140-5 in 19.4 overs (Gautam Gambhir 63, Jacques Kallis 26, Ravichandran Ashwin 2-22, Dwayne Bravo 2-27). Chennai Super Kings 139-5 (Suresh Raina 44, Mahendra Singh Dhoni 34, Jacques Kallis 2-21).