Saina Nehwal, PV Sindhu and P Kashyap will play their quarterfinal matches in the World Badminton Championships at Guangzhou in China today.In Women's singles category, Saina will clash with 13th seed Korean Yeon Ju Bae and PV Sindhu will take on 7th seed Shixian Wang Yihan of China. World number three Saina yesterday defeated fifteenth seed Porntip Buranaprasertsuk of Thailand in straight games, 18-21, 21-16, 21-14. Sindhu beat Yahan Wang 21-18, 23-21 in the other pre-quarterfinals. In the Men's section, P. Kashyap will clash with Pengyu Du of China. He beat Yun Hu of Hong Kong 21-13, 21-16 in the pre quarter finals yesterday.