India, Aug. 20 -- Day 4 at the Indira Gandhi Stadium in Delhi saw India suffer setbacks in both men's and women's singles. Ayush Shetty's World Championships campaign ended in the pre-quarterfinals after Indonesia's Alwi Farhan defeated him 21-19, 21-11. PV Sindhu also bowed out in the Round of 16, losing a closely fought 11-21, 21-15, 17-21 contest to China's Wang Zhi Yi, who overcame cramps to reach the quarter-finals.

There was some joy for the home side in women's doubles, as Treesa Jolly and Gayatri Gopichand defeated Japan's seventh seeds Rin Iwanaga and Kie Nakanishi 21-16, 21-12 to advance to the quarter-finals. However, the mixed doubles pair of Dhruv Kapila and Tanisha Crasto exited after a 16-21, 5-21 loss to China's Guo Xin W...