Indian men’s doubles star Satwiksairaj Rankireddy on Wednesday said improving service and receive remains the key focus area for him and partner Chirag Shetty as they look to compete consistently against the world’s top pairs.

The World No. 3 pair opened their campaign at the season-ending BWF World Tour Finals with a gritty 12-21, 22-20, 21-14 win over Olympic silver medallists Liang Wei Keng and Wang Chang of China in their opening men’s doubles Group B match.