Minh, seeded third here, dispatched his Indian rival easily, winning 21-18, 21-10 in 39 minutes.

It was the second consecutive time Minh beat Parupalli. The two met previously at Guangzhou's Asian Games last November when Minh won 21-14, 22-20. 

Minh, who is the last member of his Vietnamese team left standing, will face Bao Chunlai of China in the quarter-final round. Their matches have been numerous and Minh has never before beaten Bao, who is the former world No 2 and is ranked fifth in this tournament. 

Earlier, Vietnamese duo Nguyen Hoang Nam and Tran Thanh Hai lost 11-21, 13-21 to Germans Ingo Kindervater and Johannes Schoettler, while another pair, Bui Bang Duc and Dao Manh Thang, were defeated 5-21, 8-21 by Hiroyuki Endo and Kenichi Hayakawa of Japan.

The tournament will conclude July 16 when the winners walk away with a total bonus of US$120,000.