Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Chiang Rai Qual | 2022/04/17 02:00 | Kazuma Kawachi v Natthasith Kunsuwan | 6-3,6-7,7-10 |
| ITF M15 Chiang Rai Qual | 2022/04/10 04:20 | Natthasith Kunsuwan v Digvijay Pratap Singh | 7-6,0-6,10-12 |
| ITF M25 Monastir | 2022/03/28 09:00 | Alexis Boureau v Natthasith Kunsuwan | 6-3,6-0 |
| ITF M25 Monastir | 2022/03/27 10:00 | Natthasith Kunsuwan v Filippo Martini | 6-3,6-2 |
| ITF M25 Monastir | 2022/03/22 10:30 | Natthasith Kunsuwan v Pietro Pampanin | 6-4,4-6,1-10 |
| ITF M15 Monastir | 2021/10/25 10:00 | Natthasith Kunsuwan v Xian Yao Zhou | 3-6,6-7 |
| ITF M15 Monastir | 2021/10/20 14:30 | Natthasith Kunsuwan v Sascha Gueymard Wayenburg | 1-6,2-6 |
| ITF M15 Monastir | 2021/10/18 14:00 | Natthasith Kunsuwan v Stefano D'Agostino | 6-7,3-6 |
| ITF M15 Chiang Rai Qual | 2022/04/17 02:00 | Thantub Suksumrarn v Kento Tagashira | 6-2,7-6 |
| ITF M15 Chiang Rai | 2022/04/12 05:15 | Connor Farren v Thantub Suksumrarn | 7-6,3-6,6-4 |
| ITF M25 Nonthaburi | 2020/02/04 04:15 | Thantub Suksumrarn v Ray Ho | 3-6,6-7 |
| ITF M25 Nonthaburi | 2020/02/02 08:05 | Michael Mathayomchand v Thantub Suksumrarn | 2-6,2-6 |
| ITF M25 Nonthaburi | 2020/01/26 04:50 | Pol Wattanakul v Thantub Suksumrarn | 7-6,7-6 |
| ITF M15 Nonthaburi | 2019/11/28 05:00 | Thantub Suksumrarn v Danylo Kalenichenko | 6-4,6-2 |
| ITF M15 Nonthaburi | 2019/11/26 05:55 | Thantub Suksumrarn v Peerapat Dedthonglang | 6-2,6-0 |
| ITF M15 Hua Hin | 2019/08/28 06:15 | Thantub Suksumrarn v Dayne Kelly | 2-6,7-6,0-6 |