Stadium: Court 3 Round: 27 Ground: Hardcourt outdoor
| ITF Thailand F4 | 2018/09/26 02:30 | Tanuma, Ryota v Kovapitukted, Palaphoom | 3-6,7-5,6-3 |
| 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 F4 | 2018/09/26 02:30 | Singh, Karunuday v Jumpei Yamasaki | 6-4,7-5 |
| ITF Thailand F4 | 2018/09/25 04:30 | Abhinav Sanjeev Shanmugam v Singh, Karunuday | 2-6,2-6 |
| ITF Thailand F3 | 2018/09/06 02:00 | Wishaya Trongcharoenchaikul v Singh, Karunuday | 2-6,7-6,6-3 |
| ITF Thailand F3 | 2018/09/05 02:00 | Navasirisomboon, Jirat v Singh, Karunuday | 3-6,4-6 |
| ITF Thailand F3 | 2018/09/04 04:10 | Kelsey Stevenson v Singh, Karunuday | 3-6,3-6 |
| ITF Thailand F2 | 2018/08/27 07:05 | Du Toit, Lance-Pierre v Singh, Karunuday | 3-6,6-4,6-4 |
| ITF Thailand F1 | 2018/08/22 02:00 | Mousley, Bradley v Singh, Karunuday | 4-6,6-3,7-6 |
| ITF Thailand F1 | 2018/08/21 02:00 | Chiu, Yu Hsiang v Singh, Karunuday | 3-6,1-6 |