Olympic silver medallist P V Sindhu was the only bright spot on a dismal day for Indian badminton as she progressed to the quarterfinals with a straight-game win at the USD 350,000 Thailand Open World Super 500 tournament here today.

On a day when rest of the Indian shuttlers found the going tough, world no 3 Sindhu, who clinched the silver medal at Commonwealth Games, continued her impressive run with a 21-16 21-14 win over Hong Kong's Yip Pui Yin to set up a fight with USA's Soniia Cheah tomorrow.