Defending champion Saina Nehwal and five other Indian shuttlers will play their pre-quarterfinal matches of the Thailand Open Grand Prix Gold Badminton tournament in Bangkok today.In the Women's Singles, top seed Saina will take on Indonesia's Febby Angguni, while Arundhati Pantawane will meet Sapsiree Taerattanachai of Thailand.In the Men's Singles, Anand Pawar will meet compatriot HS Prannoy, Sai Praneeth will play Indonesia's Wisnu Yuli Prasetyo, and Srikanth will face Korea's Hwang Jong Soo.