| ITF Hong Kong F2 | 2015/06/17 04:25 | Nam, Hyun Woo v Oh, Seong-Gook | 2-6,2-6 |
| ITF Korea F3 | 2017/06/13 01:00 | Hung, Jui-Chen v Nam, Hyun Woo | 7-6,6-1 |
| ITF Korea F1 Qual | 2017/05/29 02:35 | Nam, Hyun Woo v Lee, Dae-Hee | 6-3,3-6,0-6 |
| ITF Kazakhstan F5 | 2017/04/25 06:40 | Seol, Jae-Min v Nam, Hyun Woo | 6-2,6-4 |
| ITF Kazakhstan F4 | 2017/04/18 09:25 | Nam, Hyun Woo v Manuel Guinard | 4-6,6-3,1-6 |
| ITF Kazakhstan F4 Qual | 2017/04/16 07:50 | Nam, Hyun Woo v Dubrivnyy, Artem | 7-6,6-1 |
| ITF Thailand F5 | 2016/12/22 03:00 | Denis Yevseyev v Nam, Hyun Woo | 6-0,7-6 |
| ITF Thailand F5 | 2016/12/21 03:00 | Nam, Hyun Woo v Igoshin, Alexander | 6-1,6-2 |
| ITF Thailand F5 | 2016/12/18 05:55 | Niki Kaliyanda Poonacha v Nam, Hyun Woo | 6-7,1-6 |
| ITF Korea F4 | 2017/06/19 01:00 | Oh, Seong-Gook v Kim, Hyeong Don | 6-3,6-1 |
| ITF Korea F4 | 2017/06/18 02:00 | Oh, Seong-Gook v Kang, Dong Woon | 7-5,6-4 |
| ITF Korea F3 | 2017/06/14 01:00 | Oh, Seong-Gook v Lee, Tae-Woo | 2-6,4-6 |
| Korea F3, Singles Qualifying | 2017/06/12 03:00 | Oh, Seong-Gook v Park, Jun Sang | 7-5,7-6 |
| Korea F3, Singles Qualifying | 2017/06/11 04:30 | Oh, Seong-Gook v Kim, A-Ram | 6-3,6-1 |
| Korea F3, Singles Qualifying | 2017/06/10 03:00 | Oh, Seong-Gook v Jeong, In Kyo | 6-3,6-4 |
| ITF Korea F2 Qual | 2017/06/03 03:00 | Oh, Seong-Gook v Park, Jun Sang | 4-6,2-6 |
| ITF Korea F1 Qual | 2017/05/29 04:20 | Oh, Seong-Gook v Jang, Woo Hyeok | 2-6,3-6 |