Saina in quarters; Dutt stuns No 9
Defending champion Saina Nehwal defeated Jie Yao of the Netherlands 21-17, 21-17 to set up a Hong Kong Super Series quarter-final clash with two-time All England champion Tine Baun of Denmark.
Meanwhile, RMV Gurusaidutt stunned World No 9 Pengyu Du of China in a thrilling three-game match.
Gurusaidutt beat Pengyu 15-21, 21-7, 21-13.
The 21-year-old Andhra lad will face World No 2 Chinese Chen Long in today's quarter-final. A day ago, Ajay Jayaram had shocked World No 6 Sho Sasaki of Japan.