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