Stadium: Court 5 Round: 25
| ITF Korea F5 | 2018/08/19 02:00 | Ma, William v Lee, Seounghun | 6-3,4-6,3-6 |
| ITF Korea F5 | 2018/08/18 01:00 | Ma, William v Kim, Hangyeom | 6-3,6-3 |
| ITF Korea F4 | 2018/08/13 03:00 | Park, Minjong v Ma, William | 6-3,6-1 |
| ITF China F8 | 2018/06/07 02:00 | Fajing Sun v Ma, William | 6-1,6-1 |
| ITF China F8 | 2018/06/05 02:00 | Ma, William v Fang, Ruitong | 6-4,6-4 |
| ITF China F8 Qual | 2018/06/03 03:25 | Ma, William v Zijiang Yang | 6-2,6-2 |
| ITF China F7 Qual | 2018/05/27 06:05 | Bingyu Yu v Ma, William | 6-4,6-0 |
| ITF China F6 Qual | 2018/05/14 03:00 | Tsung-Hao Huang v Ma, William | 6-2,6-4 |
| ITF Korea F4 | 2018/08/19 03:15 | Jae Hwan Kim v Oh, Seong-Gook | 6-3,3-6,4-6 |
| ITF Korea F4 | 2018/08/18 01:00 | Oh, Seong-Gook v Park, Uisung | 6-4,6-2 |
| ITF Korea F4 | 2018/08/17 01:00 | Oh, Seong-Gook v Hovhannisyan, Mousheg | 4-6,6-4,6-2 |
| ITF Korea F4 | 2018/08/16 01:00 | Oh, Seong-Gook v Kwon, OH-Hee | 6-4,6-4 |
| ITF Malaysia F2 | 2018/07/10 03:50 | Purcell, Rhett v Oh, Seong-Gook | 7-6,7-5 |
| ITF Malaysia F1 | 2018/07/04 03:30 | Moritani, Soichiro v Oh, Seong-Gook | 6-4,6-0 |
| ITF Malaysia F1 | 2018/07/03 10:05 | Oh, Seong-Gook v Noh, Sang-Woo | 7-6,6-2 |
| ITF Korea F3 | 2018/06/18 03:30 | Oh, Seong-Gook v Hong, Seong Chan | 6-7,0-6 |