Stadium: Court 11 Round: 27
| ITF Korea F4 | 2018/08/16 01:00 | Seong-Gook Oh v Oh-Hee Kwon | 6-4,6-4 |
| ITF Malaysia F2 | 2018/07/10 03:50 | Rhett Purcell v Seong-Gook Oh | 7-6,7-5 |
| ITF Malaysia F1 | 2018/07/04 03:30 | Soichiro Moritani v Seong-Gook Oh | 6-4,6-0 |
| ITF Malaysia F1 | 2018/07/03 10:05 | Seong-Gook Oh v Sang-Woo Noh | 7-6,6-2 |
| ITF Korea F3 | 2018/06/18 03:30 | Seong-Gook Oh v Seong Chan Hong | 6-7,0-6 |
| ITF Korea F2 | 2018/06/13 03:05 | Seong-Gook Oh v Chukang Wang | 6-1,5-7,7-5 |
| ITF Korea F1 | 2018/06/05 01:00 | Seong-Gook Oh v Jae-Won Choi | 1-6,5-7 |
| Challenger Busan Qual | 2018/05/12 02:15 | Jeamoon Lee v Seong-Gook Oh | 7-6,6-3 |
| ITF Korea F4 | 2018/08/14 03:20 | Hyeong Don Kim v Mousheg Hovhannisyan | 6-4,1-6,2-6 |
| ITF USA F21 | 2018/08/01 19:45 | Govind Nanda v Mousheg Hovhannisyan | 6-2,6-2 |
| ITF USA F20 | 2018/07/24 18:35 | Tristan Boyer v Mousheg Hovhannisyan | 6-2,6-1 |
| ITF China F11 | 2018/07/17 02:55 | Mousheg Hovhannisyan v Runhao Hua | 3-6,4-6 |
| ITF China F10 | 2018/07/10 02:00 | Yan Bai v Mousheg Hovhannisyan | 7-6,6-3 |
| ITF USA F18 | 2018/06/26 15:35 | Jacob Dunbar v Mousheg Hovhannisyan | 6-3,6-7,6-2 |
| ITF USA F16 | 2018/06/20 22:35 | Jordi Arconada v Mousheg Hovhannisyan | 6-1,6-3 |
| ITF Japan F7 | 2018/06/05 02:30 | Sho Shimabukuro v Mousheg Hovhannisyan | 6-3,6-4 |