Ground: Hardcourt outdoor
| ITF Thailand F9 | 2015/04/27 03:00 | Kikuchi, Gengo v Nam, Ji Sung | 6-4,6-7,6-3 |
| ITF Thailand F9 | 2015/04/21 06:50 | Akira Santillan v Nam, Ji Sung | 7-6,6-1 |
| Coupe Davis | 2015/03/08 05:15 | Sornbutnark, Warit v Nam, Ji Sung | 6-4,6-3 |
| ITF USA F4 | 2015/01/15 18:00 | Sarkissian, Alexander v Nam, Ji Sung | 6-4,6-2 |
| ITF USA F4 | 2015/01/14 18:00 | Nam, Ji Sung v Marcos Giron | 6-4,6-2 |
| ITF USA F2 | 2015/01/07 19:20 | Nam, Ji Sung v Sarkissian, Alexander | 7-6,7-5 |
| ITF China F9 | 2014/07/25 03:30 | Nam, Ji Sung v Nikola Milojevic | 2-6,7-6,5-7 |
| ITF China F9 | 2014/07/24 02:00 | Niki, Takuto v Nam, Ji Sung | 5-7,4-6 |
| ITF Korea F1 Qual | 2014/05/01 05:20 | Noh, Sang-Woo v Propoggia, Dane | 3-6,0-6 |
| ITF Korea F1 Qual | 2014/04/29 03:00 | Wachiramanowong, Kittipong v Noh, Sang-Woo | 3-6,2-6 |