| ITF M15 Nakhon Si Thammarat | 02/29 06:25 | 26 | Natthayut Nithithananont v Maximus Jones | 1-6,2-6 | |
| ITF M15 Nakhon Si Thammarat | 02/28 02:00 | 25 | Natthayut Nithithananont v Jiayang Dong | 6-4,6-2 | |
| ITF M15 Nakhon Si Thammarat Qual | 02/18 03:40 | 54 | Yunseok Jang v Natthayut Nithithananont | 6-3,6-3 | |
| ITF M15 Nakhon Si Thammarat | 02/11 02:00 | 54 | Amit Vales v Natthayut Nithithananont | 3-6,7-5,10-8 | |
| ITF M25 Hua Hin | 11/12 06:15 | 54 | Jiayang Dong v Natthayut Nithithananont | 6-4,6-1 | |
| ITF M15 Hua Hin | 11/09 03:00 | 26 | Natthayut Nithithananont v Matteo Lavizzari | 4-6,4-6 | |
| ITF M15 Hua Hin | 11/07 04:45 | 25 | Natthayut Nithithananont v Daksh Prasad | 6-4,7-5 | |
| ITF M15 Nakhon Si Thammarat Qual | 09/03 03:00 | 54 | Natthayut Nithithananont v Tanakorn Srirat | 4-6,6-7 | |
| ITF M15 Nakhon Si Thammarat Qual | 07/16 03:15 | 54 | Natthayut Nithithananont v Tommy Czaplinski | 4-6,1-6 | |
| ITF M15 Nakhon Si Thammarat | 07/02 07:05 | 54 | Natthayut Nithithananont v Patrik Oplustil | 1-6,5-7 | |
| ITF M25 Nakhon Si Thammarat | 06/11 06:55 | 54 | Natthayut Nithithananont v Dev Javia | 4-6,4-6 | |
| ITF M15 Nakhon Si Thammarat | 06/06 02:00 | 25 | Wishaya Trongcharoenchaikul v Natthayut Nithithananont | 6-2,6-4 | |
| ITF M15 Nakhon Si Thammarat | 05/29 05:40 | 19 | Natthayut Nithithananont v Chanon Phunsawat | 4-6,2-6 | |
| ITF M15 Nakhon Si Thammarat | 05/28 06:55 | 54 | Islam Orynbasar v Natthayut Nithithananont | 6-3,4-6,9-11 | |
| ITF M15 Chiang Rai Qual | 06/19 03:00 | 44 | Natthayut Nithithananont v Krittin Koaykul | 2-6,6-7 | |
| ITF M15 Chiang Rai | 06/12 04:30 | 44 | Chuhan Wang v Natthayut Nithithananont | 6-1,6-2 | |
| ITF M25 Chiang Rai Qual | 06/05 11:05 | 44 | Arjun Mehrotra v Natthayut Nithithananont | 6-4,6-2 | |
| ITF M25 Chiang Rai | 05/30 06:40 | 44 | Natthasith Kunsuwan v Natthayut Nithithananont | 6-2,6-4 | |
| ITF M25 Chiang Rai | 05/29 07:05 | 44 | Teerapat Khantiweerawat v Natthayut Nithithananont | 4-6,4-6 | |
| ITF M15 Chiang Rai | 04/25 01:50 | 44 | Rishab Agarwal v Natthayut Nithithananont | 6-1,6-2 | |
| ITF M15 Chiang Rai Qual | 04/24 01:55 | 44 | Natthayut Nithithananont v Taentawan T M Maggioli | 1-6,6-2,10-8 | |
| ITF M15 Chiang Rai Qual | 04/17 03:00 | 44 | Natthayut Nithithananont v Suphawat Saeoui | 3-6,0-6 | |
| ITF M15 Chiang Rai | 04/03 03:10 | 44 | Natthayut Nithithananont v Gunjan Jadhav | 1-6,3-6 | |
| ITF M15 Monastir | 12/05 11:30 | 62 | Alessandro Bellifemine v Natthayut Nithithananont | 6-1,6-0 | |
| ITF M15 Monastir | 11/28 09:30 | 62 | Antoine Berger v Natthayut Nithithananont | 7-5,6-1 | |
| ITF M15 Monastir | 11/21 11:00 | 62 | Shohei Chikami v Natthayut Nithithananont | 6-2,6-0 | |
| ITF M15 Monastir | 11/14 11:00 | 62 | Nikita Volonski v Natthayut Nithithananont | 6-1,6-1 | |
| ITF M15 Monastir | 11/08 09:00 | 62 | Lorenzo Vatteroni v Natthayut Nithithananont | 7-5,6-4 | |
| ITF M15 Monastir | 10/31 10:00 | 62 | Natthayut Nithithananont v Pietro Pampanin | 1-6,4-6 | |
| ITF M15 Monastir | 10/25 09:00 | 62 | Natthayut Nithithananont v Zakai Stone | 0-6,3-6 |