Indian shuttler P V Sindhu stunned reigning Olympic Champion while Saina Nehwal registered straight set victory to enter the quarterfinals of Badminton World Championship 2015 being held at Jakarta.11th seeded Sindhu upset third seed Li Xuerui of China in three set games, 21-17, 14-21, 21-17 to enter the last 8 stage. While world number two Saina cruised into the quarters after defeating Sayaka Takahashi of Japan 21-18, 21-14.Later today in the men's singles event, world number three K Srikanth will play Yun Hu of Hong Kong, while HS Prannoy will clash with higher placed Viktor Axelsen of Denmark.In the Women's Doubles, the pair of Jwala Gutta and Ashwini Ponnappa will also be playing later today against Japanese duo of Reika Kakiiwa and Miyuki Maeda.