Saina Nehwal and Parupalli Kashyap have stormed into the Singles quarter-finals of the Indian Open Super Series badminton tournament. At the Siri Fort Sports complex in New Delhi yesterday, Saina thrashed Thailand's Natcha Saengchote in straight games 21-15 21-12. Parupalli Kashyap defeated R M V Gurusaidutt 21-15 16-21 21-11 in the men's singles competition. However, it was heartbreak for Malaysia Open finalist Sourabh Varma, Trupti Murgunde, former national champion Sayali Gokhale and Commonwealth Games gold medallists Jwala Gutta and Ashwini Ponnappa as they crashed out in the second round.