Stadium: Court 8 Round: 44
| ITF Thailand F5 | 2018/09/29 07:30 | Nawakarn Khunjan v Gregory Nitayamekin | 6-0,6-0 |
| ITF Thailand F5 | 2018/09/29 07:30 | Nawakarn Khunjan v Gregory Nitayamekin | 6-0,6-0 |
| ITF Thailand F4 | 2018/09/22 02:30 | Delf Gohlke v Gregory Nitayamekin | 6-0,6-3 |
| ITF Thailand F3 | 2018/09/02 02:00 | Prachaya Baibong v Gregory Nitayamekin | 6-0,6-0 |
| ITF Thailand F1 | 2018/08/19 05:00 | Worarin Kumthonkittikul v Gregory Nitayamekin | 6-1,6-0 |
| ITF Chinese Taipei F2 Qual | 2018/07/22 05:30 | Alex Hunt v Gregory Nitayamekin | 6-2,6-2 |
| ITF Chinese Taipei F1 Qual | 2018/07/15 03:30 | Gregory Nitayamekin v Yi Jui Lo | 0-6,0-6 |
| ITF China F6 Qual | 2018/05/12 04:15 | Gregory Nitayamekin v Yong Jia Cai | 2-6,1-6 |
| ITF China F5 Qual | 2018/05/05 02:00 | Mitchell Thomas McDaniels v Gregory Nitayamekin | 6-2,6-1 |
| ITF Thailand F6 | 2018/10/07 02:30 | Nawakarn Khunjan v Chayanon Kaewsuto | 4-6,4-6 |
| ITF Thailand F6 | 2018/10/06 03:30 | Ankit Chopra v Nawakarn Khunjan | 6-4,4-6,4-6 |
| ITF Thailand F5 | 2018/09/30 02:30 | Nawakarn Khunjan v Kittirat Kerdlaphee | 4-6,4-6 |
| ITF Thailand F5 | 2018/09/29 07:30 | Nawakarn Khunjan v Gregory Nitayamekin | 6-0,6-0 |
| ITF Thailand F3 | 2018/09/01 02:00 | Chanon Phunsawat v Nawakarn Khunjan | 3-6,2-6 |
| ITF Thailand F1 | 2018/08/22 04:50 | Nawakarn Khunjan v Patrik Rikl | 2-6,2-6 |
| ITF Thailand F1 | 2018/08/21 06:35 | Nawakarn Khunjan v Akanit Pumjit | 6-7,6-2,6-2 |
| ITF Thailand F1 | 2018/08/20 03:50 | Nawakarn Khunjan v Coleman Wong | 6-3,6-0 |