Saina in Thailand Open quarters

National champion Saina Nehwal remains the lone Indian in the Thailand Open after thumping Nguyen Nhung Le Ngoc of Vietnam in straight games to storm into the quarter-finals, even as compatriot Anup Sridhar crashed out of the tournament.

Saina handed out a humiliating 21-9, 21-6 defeat to Nguyen in 22 minutes to earn a meeting with top seed Xingfang Xie of China on Friday.

Sridhar lost 11-21, 26-28 to second seed Boonsak Ponsana of Thailand in 40 minutes.

P Kashyap, the other Indian in the fray, was crushed by local favourite Tanongsak Saensomboonsuk 21-14, 21-19, in 33 minutes.

Meanwhile, seventh seeds Jwala Gutta and Shruti Kurian were shown the door by the Singaporean duo of Shinta Mulia Sari and Lei Yao, who won a fiercely contested first round match, that lasted 43 minutes, 21-17, 15-21, 21-10.