CALGARY: Indian shuttler H.S. Prannoy suffered an upset in the pre-quarterfinals, while the men's doubles pair of Manu Attri and B. Sumeeth Reddy and the mixed doubles combine of Pranaav Jerry Chopra and N. Sikki Reddy entered the quarter-finals of the Canada Open Grand Prix here.
Second seeded Prannoy was stunned by South Korean ninth seed Jeon Hyeok Jin, who won 17-21, 21-14, 21-13 in an hour and a minute on Thursday to enter the quarter-finals of the $65,000 event.
The third seeded pairing of Manu and Sumeeth got the better of South Koreans Choi Solgyu and Jae Hwan Kim 21-17, 17-21, 21-13 in 45 minutes at the Canada Olympic Park.
In the semi-finals, the Indian pair will meet another South Korean pair in Kim Won Ho and Seung Jae Seo, who ended the hopes of England's Ben Lane and Sean Vendy with a hard-fought 22-20, 21-17 victory.
Mixed doubles second seeds Pranaav and Sikki took just 26 minutes to brush aside the Dutch pair of Robin Tabeling and Cheryl Seinen 21-11, 21-17.
Pranaav and Sikki will meet South Koreans Kim Won Ho and Shin Seung Chan in the semi-finals on Friday. Kim and Shin defeated Australian sixth seeds Sawan Serasinghe and Setyana Mapasa 21-18, 21-10.
However, another Indian mixed doubles pair of Kona Tarun and J. Meghana suffered a 9-21, 8-21 loss to Japanese Kohei Gondo and Wakana Nagahara.
Women's singles shuttler Ruthvika Shivani Gadde was also eliminated, losing to Japanese second seed Aya Ohori. The Japanese won 21-13, 17-21, 21-19 in a hard-fought contest which lasted 55 minutes.
Also losing were men's singles shuttlers Karan Rajan Rajarajan and Abhishek Yelegar.