He defeated No 5 seed Hiroyasu Ehara of Japan 6-0, 7-5 in a 64-minute first round match.
He will next face Masato Shiga in the second round. Shiga earlier beat wild card holder Kittiphong Wachiramanovong of the hosts 7-6 (5), 6-3.
In the doubles, Nam was pairied with Japan’s Ito Yuichi. They came from behind to beat Japan’s Ehara and Essei Okamura 3-6, 6-3, 10-7.
They will next see duo Chung Yunseong of the Republic of Korea and Max Puecell of Australia in the next match.
The tournament will end on October 15 on hard court with a total prize fund of US$15,000.