Singapore: While eighth seed P.V. Sindhu advanced to the women's singles second round, compatriot Saina Nehwal yet again failed to perform to expected standards as the seventh seed suffered a first round loss at the $300,000 Singapore Open Super Series here Wednesday.

Old nemesis Eriko Hirose of Japan got past the Indian 16-21, 21-15, 21-11 in a marathon match which lasted an hour and two minutes at the Singapore Indoor Stadium. The World No.15 drubbed Saina for the fourth time out of seven career meetings.