| ITF Thailand F1 | 08/22 03:30 | 26 | Natthasith Kunsuwan v Thomas Fancutt | 2-6,5-7 | |
| ITF Thailand F1 | 08/21 08:05 | 25 | Natthasith Kunsuwan v Mohit Mayur Jayaprakash | Cancelled | |
| ITF Thailand F1 | 08/21 07:10 | 25 | Natthasith Kunsuwan v Hao Yuan Ng | 6-2,7-5 | |
| ITF Thailand F1 | 08/20 06:25 | 44 | Natthasith Kunsuwan v Amaury De Beer | 6-0,6-2 | |
| ITF Thailand F1 | 08/19 02:00 | 44 | Natthasith Kunsuwan v Nutdanai S'wattana | 6-0,6-3 | |
| ITF Indonesia F3 Qual | 08/04 07:00 | 62 | Natthasith Kunsuwan v Jirat Navasirisomboon | 4-6,6-3,1-6 | |
| ITF China F11 | 07/17 01:00 | 25 | Natthasith Kunsuwan v Mitchell Thomas McDaniels | 6-4,1-6,1-6 | |
| ITF China F10 Qual | 07/07 05:00 | 62 | Natthasith Kunsuwan v Kousuke Ogura | 6-7,4-6 | |
| ITF China F9 | 07/04 03:00 | 26 | Natthasith Kunsuwan v Seong Chan Hong | 3-6,4-6 | |
| ITF China F9 | 07/03 09:45 | 25 | Natthasith Kunsuwan v Masayoshi Ono | 6-7,6-4,6-3 | |
| ITF China F8 | 06/05 05:30 | 25 | Di Wu v Natthasith Kunsuwan | 6-1,6-3 | |
| ITF China F7 | 05/30 02:30 | 26 | Natthasith Kunsuwan v Wishaya Trongcharoenchaikul | 4-6,3-6 | |
| ITF China F7 | 05/29 03:35 | 25 | Natthasith Kunsuwan v Tianjia Guo | 6-1,6-3 | |
| ITF China F7 Qual | 05/28 03:15 | 44 | Natthasith Kunsuwan v Bang Shuo Yin | 2-6,6-3,6-4 | |
| ITF China F7 Qual | 05/27 02:50 | 44 | Natthasith Kunsuwan v Jiaqi Zhao | 6-0,6-2 | |
| ITF China F6 | 05/15 05:00 | 25 | Natthasith Kunsuwan v Chenhe Li | 1-6,6-4,3-6 | |
| ITF China F6 Qual | 05/14 04:30 | 62 | Natthasith Kunsuwan v Sheng Tang | 6-1,6-4 | |
| ITF China F6 Qual | 05/13 06:45 | 62 | Natthasith Kunsuwan v Jiaji Wang | 6-4,6-4 | |
| ITF China F5 Qual | 05/07 03:20 | 62 | Hanyi Liu v Natthasith Kunsuwan | 6-3,6-7,6-1 | |
| ITF China F5 Qual | 05/05 06:35 | 62 | Kaiwei Wang v Natthasith Kunsuwan | 1-6,0-6 | |
| ITF China F4 Qual | 04/30 02:00 | 62 | Natthasith Kunsuwan v Liran Chen | 2-6,2-6 | |
| ITF China F4 Qual | 04/29 03:00 | 62 | Natthasith Kunsuwan v Changli Zhang | 3-6,7-6,6-4 | |
| ITF China F4 Qual | 04/28 03:35 | 62 | Natthasith Kunsuwan v Jing Ke Chen | 6-2,6-1 | |
| ITF Turkey F6 | 02/10 09:00 | 62 | Daniel Appelgren v Natthasith Kunsuwan | 6-0,6-2 | |
| Challenger Bangkok Qual | 01/06 05:10 | 45 | Natthasith Kunsuwan v Kenneth Raisma | 0-6,3-6 | |
| Challenger Bangkok Qual | 12/30 04:30 | 45 | Natthasith Kunsuwan v Rudolf Molleker | 5-7,1-6 | |
| ITF Thailand F12 Qual | 12/09 03:00 | 44 | Richard Yang v Natthasith Kunsuwan | 6-3,6-3 | |
| ITF Thailand F11 Qual | 12/02 05:00 | 44 | Natthasith Kunsuwan v Ji Hoon Son | 3-6,4-6 | |
| ITF Thailand F10 Qual | 11/25 05:00 | 44 | Matthew Leffler v Natthasith Kunsuwan | 6-0,7-6 | |
| ITF Indonesia F7 | 11/22 03:30 | 26 | Natthasith Kunsuwan v Ti Chen | 1-6,1-6 |