Stadium: Court 1 Round: 26
| ITF Thailand F3 | 2018/09/03 03:00 | Kaewsuto, Chayanon v Navasirisomboon, Jirat | 1-6,4-6 |
| ITF Thailand F2 | 2018/08/29 02:45 | Navasirisomboon, Jirat v Schneider, Ronnie | 1-6,4-6 |
| ITF Thailand F2 | 2018/08/28 03:35 | Navasirisomboon, Jirat v Pumjit, Akanit | 6-2,7-6 |
| ITF Thailand F1 | 2018/08/23 05:05 | Navasirisomboon, Jirat v Rikl, Patrik | 1-6,2-6 |
| ITF Thailand F1 | 2018/08/22 04:40 | Navasirisomboon, Jirat v Kerdlaphee, Phongsapak | 7-5,6-2 |
| ITF Thailand F1 | 2018/08/20 05:10 | Kuan-Yi Lee v Navasirisomboon, Jirat | 3-6,4-6 |
| ITF Indonesia F3 Qual | 2018/08/05 02:30 | Alexander Babanine v Navasirisomboon, Jirat | 3-6,6-2,7-6 |
| ITF Indonesia F3 Qual | 2018/08/04 07:00 | Natthasith Kunsuwan v Navasirisomboon, Jirat | 4-6,6-3,1-6 |
| 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 |
| ITF Indonesia F3 | 2018/08/09 03:30 | Beale, Jeremy v Singh, Karunuday | 7-5,6-7,6-3 |
| ITF Indonesia F3 | 2018/08/08 05:35 | Romios, Matthew Christopher v Singh, Karunuday | 7-6,1-6,4-6 |
| ITF Indonesia F3 | 2018/08/07 02:00 | Barki, Justin v Singh, Karunuday | 3-6,6-7 |
| ITF China F10 | 2018/07/10 05:10 | Singh, Karunuday v Blake Ellis | 2-6,1-6 |