Kolkata Knight Riders sharpened their chances of a playoff berth with a convincing six-wicket win over Rajasthan Royals in a crucial Indian Premier League clash at the Eden Gardens here in Kolkata on Tuesday.<br /><br />Brief scores: AKolkata Knight Riders 145/4 in 18 overs (Chris Lynn 45; Dinesh Karthik 41 not out; Ben Stokes 3/15) beat Rajasthan Royals 142 all out in 19 overs (Jos Buttler 39; Kuldeep Yadav 4/20; Andre Russell 2/13; Prasidh Krishna 2/35) by six wickets.<br />
