Electing to bat,Kolkata Knight Riders scored 139 for eight against Chennai Super Kings in their crucial IPL match at M A Chidambaram stadium here on Tuesday. Brief Score: Kolkata Knight Riders: 139 for 8 in 20 overs. (A Mathews 48,M Tiwary 27; R Ashiwn 3/16,D Bollinger 2/15).