World No. 9 shuttler Pusarla Venkata Sindhu had won her maiden Grand Prix title last year when Malaysia Open was held in Kuala Lumpur in May, followed by the Macau Open Grand Prix Gold title in December.
Two-time former winner Saina Nehwal, who has been seeded sixth, triumphed at the Swiss Open in 2011 and 2012 and reached the semi-finals last year.
Two-time champion Saina Nehwal seeded sixth, while Pusarla Venkata Sindhu is seventh. In men's singles, Parupalli Kashyap has been seeded third.
Seventh-seeded Saina Nehwal suffered a straight-sets loss to Chinese fourth seed Shixian Wang 17-21, 10-21.
Saina Nehwal overcame American qualifier Beiwen Zhang 24-22, 18-21, 21-19 in the second round and will play Chinese Wang Shixian in the last-eight match.
Saina Nehwal produced a dominating performance as she eased past Scotland's Kirsty Gilmour in the first round of All-England Championship, while Pusarla Venkata Sindhu lost 16-21 15-21 to Sun Yu of China.
Saina Nehwal defeated Scotland's Kirsty Gilmour 21-15, 21-6 in 32 minutes and will play American qualifier Beiwen Zhang in the second round of All-England Championship.
Jwala Gutta and Ashwini Ponnappa lost in the second round of qualification to Chinese pair of Jin Ma and Yuanting Tang in 54 minutes. The Chinese pair won 14-21, 21-15, 21-17.
Two-time former national champion, Arvind Bhat, 34, became the second Indian male shuttler after K Srikanth to win a Grand Prix gold title outside the country when he defeated Danish Hans-Kristian Vittinghus in the final of the singles competition of the USD 120,000 German Open in Mulheim an der Ruhr, Germany on Sunday night.
World No.7 Saina Nehwal is the only seeded Indian at seventh and will open her women's singles campaign against Kirsty Gilmour of Scotland in the first round of the Super Series Premier event.
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