Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF Thailand F4 | 2018/09/25 04:05 | Tanuma, Ryota v R Prabodh, Suraj | 6-0,6-0 |
| Challenger Kaohsiung | 2018/09/16 02:00 | Tanuma, Ryota v Frederico Ferreira Silva | 3-6,4-6 |
| Challenger Kaohsiung | 2018/09/15 03:50 | Yu Hsiou Hsu v Tanuma, Ryota | 6-3,3-6,4-6 |
| ITF Thailand F2 | 2018/08/30 02:00 | Tanuma, Ryota v Kelly, Dayne | 6-7,2-6 |
| ITF Thailand F2 | 2018/08/29 03:25 | Tanuma, Ryota v Du Toit, Lance-Pierre | 6-2,7-5 |
| ITF Thailand F2 | 2018/08/27 07:10 | Tanuma, Ryota v Moritani, Soichiro | 6-2,7-6 |
| ITF Thailand F1 | 2018/08/23 03:00 | Schneider, Ronnie v Tanuma, Ryota | 6-4,6-4 |
| ITF Thailand F1 | 2018/08/22 02:00 | Brugnerotto, Marco v Tanuma, Ryota | 5-7,6-3,1-6 |
| 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 | Kovapitukted, Palaphoom v Ng, Hao Yuan | 6-3,6-0 |
| ITF Thailand F4 | 2018/09/22 02:30 | Kovapitukted, Palaphoom v Pascual, Marlino | 6-0,6-2 |
| Coupe Davis | 2018/09/16 07:40 | Kovapitukted, Palaphoom v Hady Habib | 3-6,3-6 |
| Coupe Davis | 2018/09/15 05:25 | Kovapitukted, Palaphoom v Benjamin Hassan | 3-6,4-6 |
| ITF Thailand F3 | 2018/09/04 06:55 | Kovapitukted, Palaphoom v Saito, Takashi | 6-4,4-6,2-6 |
| ITF Thailand F3 | 2018/09/03 02:00 | Kovapitukted, Palaphoom v Baibong, Prachaya | 6-1,6-3 |
| ITF Thailand F3 | 2018/09/02 02:00 | Kovapitukted, Palaphoom v Roberts, Charles | 6-4,6-2 |