Stadium: Court B Round: 25 Ground: Hardcourt outdoor
| ITF Thailand F7 Qual | 2017/09/30 02:30 | Natthasith Kunsuwan v Kasidit Samrej | 7-6,6-0 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/28 04:40 | Natthasith Kunsuwan v Mathayomchand, Michael | 6-4,6-3 |
| 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 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/28 04:45 | Kerdlaphee, Phongsapak v Kasidit Samrej | 3-6,3-6 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/27 07:30 | Kasidit Samrej v Mulada, Tonkla | 6-0,6-0 |
| Nonthaburi, Singles M-ITF-THA-01A | 2019/05/21 06:35 | Kasidit Samrej v Bourchier, Harry | 3-6,6-7 |
| ITF Thailand F3 | 2018/09/02 02:00 | Kasidit Samrej v Ren Nakamura | 4-6,5-7 |
| Bangkok, Thailand, Qualifying | 2017/12/31 03:00 | Cem Ilkel v Kasidit Samrej | 6-4,6-4 |
| Bangkok, Thailand, Qualifying | 2017/12/30 03:00 | Srirat, Tanakorn v Kasidit Samrej | 4-6,1-6 |
| ITF Thailand F7 Qual | 2017/09/30 02:30 | Natthasith Kunsuwan v Kasidit Samrej | 7-6,6-0 |
| ITF Thailand F6 Qual | 2017/08/12 04:30 | Tan, Li-Wie v Kasidit Samrej | 6-3,6-3 |