The second seed PV Sindhu sailed into the quarter-finals with a comfortable win while compatriot Saina Nehwal crashed out of the Hong Kong Open Super series in Kowloon on Thursday.
Sindhu, who slipped a place to be number three in the world rankings released on Thursday, defeated Japan's Aya Ohori 21-14, 21-17 in a second round match lasting 39 minutes.
It was Sindhu's third win over the Japanese in as many meetings. The Indian faces another Japanese, fifth seed Akane Yamaguchi, in the quarter-finals on Friday.
The tenth-ranked Nehwal, however, ran out of steam to lose to China's Chen Yufei and eighth seed 21-18, 19-21, 10-21 in a second round match lasting an hour. The players met for the first time.
It was also curtains for India in the men's singles after 10th-ranked HS Prannoy went down fighting to Japan's Kazumasa Sakai 21-11, 10-21, 15-21 in a 54-minute battle. The 23-ranked Japanese got the better of Prannoy for the third time in as many matches.
Parupalli Kashyap and Sourabh Verma had lost in the opening round on Wednesday.
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