Satwiksairaj Rankireddy and Chirag Shetty on Friday became the first Indian pair to win a medal in the men's doubles competition at the World Championships but HS Prannoy's impressive run ended in agony as he went down narrowly in the men's singles quarterfinals. Satwik and Chirag, the world number 7 combination, which had claimed the Commonwealth Games gold medal earlier this month, stunned the local favourites and defending champions Takuro Hoki and Yugo Kobayashi 24-22 15-21 21-14 in an hour and 15 minutes to claim its maiden medal at the prestigious tournament.