India, Aug. 15 -- A recurring shoulder injury has been "frustrating" for Satwiksairaj Rankireddy and at times "irritating" for partner Chirag Shetty, but the Indian pair will stick to their "aggressive and explosive" brand of badminton as they target a better medal at their first World Championships on home soil.

Satwik has been managing the shoulder problem for the last few years, making it difficult to maintain momentum after a good tournament. The duo had won the Singapore Open Super 750, their first title in two years, but subsequent flare-ups forced mid-match retirements and withdrawals at both the Indonesia Open and the Japan Open.

"It is always tough with the shoulder injury. I have been managing it for the last few years. It is ...