Basel: India`s ace shuttler Saina Nehwal stormed into the quarter-final of the Swiss Open Grand Prix Gold Badminton tournament, with a straight game win over of Petya Nedelcheva of Bulgaria. Saina, who is the defending champion and top seed , took exactly half an hour to get the better of Nedelcheva 21-15 21-10 in the pre-quarterfinals of the women`s singles event late last night. By virtue of this win, Saina, who reclaimed World No 2 position yesterday, took a 6-2 head-to-head lead over 23rd ranked Nedelcheva. Saina will next face sixth seeded Tzu Ying Tai of Chinese Taipei in the quarterfinal later today. Barring Saina, curtains fell on India`s challenge in the tournament as all other shuttlers from the country made early exits. Rising star P V Sindhu made an exit from the tournament after losing to qualifier Yui Hashimito of Japan 21-23 11-21 in a second round contest of the women`s singles event. London Olympics quarter-finalist Parupalli Kashyap also crashed out in the pre-quarterfinal of the men`s singles event after losing to Wei Feng Chong of Malaysia yesterday. The fifth seeded Indian squandered a game advantage to lose to his ninth-seeded opponent 21-18 7-21 16-21 in a 55-minute contest. In another men`s singles pre-quarterfinal match, H S Prannoy lost to Tien Chen Chou of Chinese Taipei 16-21 21-15 15-21 in an hour`s contest. In men`s doubles, the Indian duo of Pranav Jerry Chopra and Akshay Dewalkar was handed a straight-game defeat by the Korean top seeds Sung Hyun Ko and Yong Dae Lee, who won 21-14 21-12.