Thailand Open champion, Kidambi Srikanth stunned world number 10 Tien Minh Nguyen of Vietnam 18-21 21-15 21-8 in men's singles to reach the quarterfinals of the Singapore Super Series Badminton.Srikanth next takes on Hong Kong's Yun Hu in the quarterfinals today. The Indian has a 1-0 record against Hu, having beaten him at the Maybank Malaysia Open early in the season.In the men's doubles competition, Alwin Franchis and Arun Vishnu were humbled by the top seeded Indonesian combo of Mohammad Ahsan and Hendra Setiawan 21-17 24-22.Another Indian pair of Arun Vishnu and Aparna Balan, too, failed to cross the second round hurdle as they went down fighting 21-23 17-21 to Gideon Markus Fernaldi and Rizki Amelia Pradipta of Indonesia in the mixed doubles event.P. Kashyap, who rose to the 19th place today in BWF ranking, suffered a close 16-21 21-15 22-20 defeat to World No. 35 Dong Keun Lee of Korea in the men's singles competition yesterday.