Stadium: Court 6 Round: 62 Ground: Hardcourt outdoor
| ITF Thailand F5 | 2018/09/29 02:30 | Reansuwong, Pasawee v Shin, Seung-Hun | 2-6,1-6 |
| ITF Thailand F4 | 2018/09/24 02:30 | Kovapitukted, Palaphoom v Shin, Seung-Hun | 6-3,6-4 |
| ITF Thailand F4 | 2018/09/23 04:00 | Shin, Seung-Hun v Sookton-Eng, Chanchai | 6-3,6-3 |
| ITF Korea F4 | 2018/08/11 01:00 | Kim, Dukyoung v Shin, Seung-Hun | 3-6,3-6 |
| ITF Korea F3 | 2018/06/19 08:10 | Shin, Seung-Hun v Jumpei Yamasaki | 6-4,2-6,1-6 |
| Korea F3, Singles Qualifying | 2018/06/16 05:00 | Shin, Seung-Hun v Ratsaratany, Loic | 7-6,7-6 |
| ITF Korea F2 | 2018/06/10 02:00 | Jae Hwan Kim v Shin, Seung-Hun | 6-2,6-2 |
| ITF Korea F2 | 2018/06/09 01:00 | Jin, Hyun Bin v Shin, Seung-Hun | 5-7,3-6 |
| ITF Thailand F5 | 2018/09/29 02:30 | Bingyu Yu v Natthasith Kunsuwan | 6-3,3-6,3-6 |
| ITF Thailand F4 | 2018/09/24 02:30 | Natthasith Kunsuwan v Tsung-Hao Huang | 6-7,5-7 |
| ITF Thailand F3 | 2018/09/04 07:45 | Moritani, Soichiro v Natthasith Kunsuwan | 6-2,6-2 |
| ITF Thailand F2 | 2018/08/28 02:00 | Natthasith Kunsuwan v Kelly, Dayne | 3-6,1-6 |
| ITF Thailand F1 | 2018/08/22 03:30 | Natthasith Kunsuwan v Thomas Fancutt | 2-6,5-7 |
| ITF Thailand F1 | 2018/08/21 07:10 | Natthasith Kunsuwan v Ng, Hao Yuan | 6-2,7-5 |
| ITF Thailand F1 | 2018/08/20 06:25 | Natthasith Kunsuwan v de Beer, Amaury | 6-0,6-2 |
| ITF Thailand F1 | 2018/08/19 02:00 | Natthasith Kunsuwan v Sincharoenwattana, Nutdanai | 6-0,6-3 |