Vietnam’s No.1 badminton player Nguyen Tien Minh advanced to the men’s singles quarterfinals at the Super Series Li-Ning Singapore Open after beating Thailand’s Tanongsak Saensomboonsuk on Thursday. The 30-year-old Minh, standing 10th in the Badminton World Federation rankings, looked pretty slow in the first set and the 22nd-ranked Thai competitor, 22, was faster on his feet as he took the set 21-17. However, the more experienced Vietnamese made better use of his skills and experience to win the second and third sets 21-5 and 21-13 to book a berth in the quarterfinals of the 18-23 June tournament, which has a total cash prize of US$200,000. Minh had also come back from a set down in his previous match to beat 20-year-old Indian K. Srikanth, ranked 42nd globally. In the quarters, Minh will face the 29-year-old German Marc Zwiebler, ranked 14th, who upset top seed Pengyu Du of China, ranked 3rd in the world.