Stadium: Court 2 Round: 54 Ground: Hardcourt outdoor
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/22 03:00 | Natthasith Kunsuwan v Jayden Court | 7-5,3-6,6-7 |
| ITF - M25 Luan | 2019/05/15 07:40 | Kawakami, Rimpei v Natthasith Kunsuwan | 6-4,6-1 |
| ITF - M25 Luan | 2019/05/14 03:25 | Natthasith Kunsuwan v Wang, Guan Kai | 6-0,6-0 |
| ITF - M25 Luan | 2019/05/13 03:10 | Natthasith Kunsuwan v Zijiang Yang | 6-2,6-2 |
| Wuhan, Qualifications Simples M-ITF-CHN-05A | 2019/05/06 07:05 | Singh, Karunuday v Natthasith Kunsuwan | 6-4,6-2 |
| Wuhan, Singles Qualifying M-ITF-CHN-04A | 2019/04/30 03:20 | Natthasith Kunsuwan v Yeung, Pak Long | 5-7,2-6 |
| Wuhan, Singles Qualifying M-ITF-CHN-04A | 2019/04/29 07:05 | Natthasith Kunsuwan v Yaojie Zeng | 7-6,6-3 |
| Nishi-Tama, Simples M-ITF-JPN-01A | 2019/03/05 01:00 | Aoran Wang v Natthasith Kunsuwan | 6-4,6-4 |
| ITF Thailand F9 | 2018/11/13 02:00 | Mulada, Tonkla v Mathayomchand, Michael | 6-7,6-1,6-1 |