Nam beat Sho Katayama 6-1, 6-2 in the first match and went on to win 6-2,6-3 over Hiroyasu Ehara in the second one. Both of his rivals were from thehost country.
In the last-eight, Nam will play No 6 seed Gao Xin of China. Gao also pocketedtwo wins over Yusuke Watanuki of Japan and Wu Tung-lin from ChineseTaipei.
In the doubles category, Nam and Yusuke Takahashi were eliminated in the firstmatch, losing 2-6, 6-3, 7-10 to No 4 duo Yuichi Ito and Jumpei Yamasaki ofJapan.
In other news, Nguyen Van Phuong of Vietnam advanced to the third round of theKuala Lumpur ITF International Junior Championship’s boys singles U18 G5 event.
Phuong beat Muhammad Syabil Md Shaharudin of the hosts 6-1, 6-3 on March 22.
The No 16 seed will next play No 4 Theertha Shashank Macherla from India.
Vietnam has four representatives at this tournament but three were disqualifiedin earlier rounds.-VNA