Kolkata Knight Riders finally found the team balance they were looking for to outclass Mumbai Indians by 52 runs here on Monday and to keep their slim IPL play-off hopes alive. Lead Mumbai Indians pacer Jasprit Bumrah picked up his maiden five-wicket haul in IPL history to restrict KKR to 165 for nine after fine knocks from Venkatesh Iyer (43 off 24) and Nitish Rana (43 off 24).