Ace Indian shuttlers, Saina Nehwal and P. Kashyap have made a shock exit from the Singapore Open Superseries Badminton tournament. In the opening round yesterday, seventh seed Saina was stunned by Eriko Hirose of Japan, 21-16, 15-21, 11-21, while Kashyap lost to Korea's Dong Keun Lee, 21-16, 15-21, 20-22.However, eighth seed PV Sindhu, PC Thulasi, Srikanth K., HS Prannoy and Sai Praneeth advanced to the Singles pre-quarterfinals.The duo of Alwin Francis and Arun Vishnu also made it to the pre-quarterfinals, by winning it's opening Men's Doubles fixture.All the pre-quarterfinal matches will be played today.