| Thailand Open | 08/01 10:40 | 4 | Kanta Tsuneyama v Sitthikom Thammasin | L | 2-1 | |
| Thailand Open | 07/31 04:30 | 5 | Sitthikom Thammasin v Mark Caljouw | W | 2-0 | |
| Japan Open | 07/25 02:00 | 4 | Anthony Sinisuka Ginting v Sitthikom Thammasin | L | 2-1 | |
| Japan Open | 07/23 07:00 | 5 | Sitthikom Thammasin v Daren Liew | W | 2-0 | |
| Indonesia Open | 07/17 08:30 | 5 | Sitthikom Thammasin v Anders Antonsen | L | 0-2 | |
| Australian Open | 06/06 06:10 | 4 | Sitthikom Thammasin v Joo Ven Soong | L | 0-2 | |
| Australian Open | 06/05 07:10 | 5 | Kanta Tsuneyama v Sitthikom Thammasin | W | 0-2 | |
| Sudirman Cup | 05/22 11:00 | - | Kento Momota v Sitthikom Thammasin | L | 2-0 | |
| New Zealand Open | 05/02 07:00 | 4 | Sitthikom Thammasin v Kanta Tsuneyama | L | 0-2 | |
| New Zealand Open | 05/01 05:20 | 5 | Yuxiang Huang v Sitthikom Thammasin | W | 0-2 | |
| New Zealand Open | 04/30 20:00 | - | Yuxiang Huang v Sitthikom Thammasin | W | 0-2 | |
| Asiatiska mästerskapen | 04/25 08:00 | 4 | Sitthikom Thammasin v Shi Yuqi | L | 0-2 | |
| Asiatiska mästerskapen | 04/24 10:40 | 5 | June Wei Cheam v Sitthikom Thammasin | W | 1-2 | |
| Singapore Open | 04/10 10:00 | 5 | Srikanth Kidambi v Sitthikom Thammasin | L | 2-0 | |
| Singapore Open - Kval | 04/09 05:30 | - | Sitthikom Thammasin v Cheuk Yiu Lee | W | 2-1 | |
| Singapore Open - Kval | 04/09 03:10 | - | Ihsan Maulana Mustofa v Sitthikom Thammasin | W | 0-2 | |
| Malaysia Open | 04/04 08:40 | 4 | Sitthikom Thammasin v Kanta Tsuneyama | L | 1-2 | |
| Malaysia Open | 04/03 05:00 | 5 | Sitthikom Thammasin v H.S. Prannoy | W | 2-1 | |
| India Open | 03/28 07:30 | 4 | Khosit Phetpradab v Sitthikom Thammasin | L | 2-1 | |
| India Open | 03/27 07:50 | 5 | Sitthikom Thammasin v Gurusaidutt R.M.V. | W | 2-0 | |
| German Open | 02/28 14:40 | 4 | Sitthikom Thammasin v Kenta Nishimoto | L | 0-2 | |
| German Open | 02/27 10:25 | 5 | Thomas Rouxel v Sitthikom Thammasin | W | 0-2 | |
| Indonesia Masters | 01/24 03:20 | 4 | Sitthikom Thammasin v Zii Jia Lee | L | 0-2 | |
| Indonesia Masters | 01/23 02:30 | 5 | Sitthikom Thammasin v Kazumasa Sakai | W | 2-0 | |
| Swiss Open - Damdubbel - Kval | 01/15 08:45 | - | Sitthikom Thammasin v Zii Jia Lee | L | 0-2 | |
| Swiss Open - Damdubbel - Kval | 01/15 03:09 | - | Sitthikom Thammasin v Junpeng Zhao | W | 2-1 | |
| Thailand Masters | 01/10 08:00 | 4 | Sitthikom Thammasin v Firman Abdul Kholik | L | 0-2 | |
| Thailand Masters | 01/09 05:20 | 5 | Kantaphon Wangcharoen v Sitthikom Thammasin | W | 0-2 | |
| Giraldilla Int. - Mixed dubbel | 12/01 04:10 | 2 | Zii Jia Lee v Sitthikom Thammasin | - | Retired | |
| Giraldilla Int. - Mixed dubbel | 11/30 06:50 | 3 | Joo Ven Soong v Sitthikom Thammasin | W | 1-2 |