Kolkata Knight Riders cricketer Robin Uthappa plays a shot during the 2017 Indian Premier League (IPL) Twenty20 cricket match between Rising Pune Supergiants and Kolkata Knight Riders at The Maharashtra Cricket Association Stadium in Pune. Pic/AFP

Pune: Robin Uthappa and skipper Gautam Gambhir struck unbeaten half-centuries to power Kolkata Knight Riders to the top of the standings with a comfortable seven wicket win over Rising Pune Supergiant in an IPL match, here tonight.