India's Saina Nehwal entered the Women's singles quarterfinals of the Singapore Open Super Series.Saina will take on Lindaweni Fanetri of Indonesia today in the last-eight stage. The world number two, Saina yesterday defeated Eriko Hirose of Japan 16-21 21-16 21-9.In the Men's Singles, Sai Praneeth B lost a hard fought battle against to Wei Feng Chong of Malaysia 11-21 21-17 16-21 in a second round match.India's campaign also ended in both, mixed doubles and men's doubles events.