Rio Olympics silver medallist P.V.Sindhu rang in her 23rd birthday with a straight-game win over Japan's Aya Ohori, while H.S. Prannoy notched up a brilliant come-from-behind win over Wang Tzu Wei of Chinese Taipei to enter the quarter-finals of the $1,250,000 Indonesia Open here on Thursday.

But it was curtains for London bronze medallist Saina Nehwal, who lost in straight games to China's Chen Yufei 18-21, 15-21 here. World No.3 Sindhu, who had reached the semi-finals at Malaysia Open last week, completed an easy rout of No.17 Ohori with a 21-17, 21-14 win in a 36-minute women's singles match. This is Sindhu's fifth win over the Japanese in as many meetings.