Sixth-seeded Nam was defeated by No 1 Dayne Kelly of Australia 6-3, 6-3 in the semi-final of the singles event on May 27.
Kelly, however, failed to take the title after losing 6-3, 6-3 to Japanese Hiroyasu Ehara in the final match yesterday.
Nam and Vijay Sundar Prashanth of India were the No 1 pair in the doubles event, but they were ousted in the quarter-final, losing 6-4, 4-6, 10-12 to Japan’s Issei Okamura and Arata Onozawa.
Nam will remain in Singapore to take part in the F2 event which starts today at the same venue.
In the first round today, Vietnamese Nguyen Hoang Thien will play Aryan Goveas of India, who is the No 2 seed here.
Thien is seeded No 10 in the qualification round, where he got a walk over after his rival Punnakrit of Kritakara retired at 7-5, 1-2 on May 27.
Nam’s schedule has not been updated in the tournament’s website.