Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF Thailand F6 | 2018/10/06 05:30 | Natthasith Kunsuwan v Daniel Kossek | 6-4,6-7,6-4 |
| ITF Thailand F5 | 2018/09/30 02:30 | Seung-Hun Shin v Natthasith Kunsuwan | 7-6,6-1 |
| 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 | Soichiro Moritani v Natthasith Kunsuwan | 6-2,6-2 |
| ITF Thailand F2 | 2018/08/28 02:00 | Natthasith Kunsuwan v Dayne Kelly | 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 Hao Yuan Ng | 6-2,7-5 |
| ITF Thailand F6 | 2018/10/06 05:30 | Daisuke Sumizawa v Kousuke Ogura | 6-3,6-2 |
| ITF Thailand F5 | 2018/10/01 02:30 | Felix Corwin v Daisuke Sumizawa | 6-1,6-2 |
| ITF Thailand F5 | 2018/09/30 02:30 | Daisuke Sumizawa v Thanapet Chanta | 2-6,7-5,6-2 |
| ITF Thailand F5 | 2018/09/29 02:30 | Daisuke Sumizawa v Cheong Hwi Kim | 6-4,6-1 |
| ITF Thailand F4 | 2018/09/25 06:00 | Yuichi Ito v Daisuke Sumizawa | 6-2,6-3 |
| ITF Thailand F4 | 2018/09/24 02:30 | Daisuke Sumizawa v Worarin Kumthonkittikul | 6-7,6-2,6-1 |
| ITF Thailand F4 | 2018/09/23 04:00 | Roy Hobbs v Daisuke Sumizawa | 4-6,2-6 |
| ITF Korea F6 | 2018/08/28 02:00 | Oh-Hee Kwon v Daisuke Sumizawa | 6-1,6-4 |