Badminton WC: Treesa-Gayatri, Satwik-Chirag keep India's medal hopes alive as Sindhu, Ayush crash out (round-up)
New Delhi, Aug 20 (IANS) Treesa Jolly/Gayatri Gopichand upset seventh seeds Rin Iwanaga/Kie Nakanishi of Japan to become the first Indian women's doubles pair to reach the BWF World Championships quarterfinals in 11 years, while two-time bronze medallist Satwiksairaj Rankireddy/Chirag Shetty eked out a thrilling win even as PV Sindhu and Ayush Shetty crashed out at the Indira Gandhi Stadium on Thursday.