Indian shuttlers Saina Nehwal, PV Sindhu and P Kashyap to play their quarterfinal matches in the World Badminton Championships in China today.World number three Saina defeated fifteenth seed Porntip Buranaprasertsuk of Thailand, in straight games, 18-21, 21-16, 21-14. For a place in the semi-finals, Saina will meet the winner of the other pre-quarterfinal match between Japan's Sayaka Takahashi and Yeon Ju Bae of Korea.Sindhu beat Yahan Wang 21-18, 23-21 in the other pre-quarterfinals.In the Men's section P. Kashyap entered the quarterfinal beating Yun Hu of Hong Kong 21-13, 21-16.