| Korea Masters | 04/13 01:40 | 5 | Jan Louda v Sitthikom Thammasin | W | 0-2 | |
| Korea Open | 04/05 01:40 | 5 | Sitthikom Thammasin v Shesar Hiren Rhustavito | L | 1-2 | |
| Swiss Open | 03/24 11:00 | - | Sitthikom Thammasin v Anders Antonsen | L | 1-2 | |
| Swiss Open | 03/23 11:10 | - | Sitthikom Thammasin v Nhat Nguyen | W | 2-0 | |
| All England Open | 03/16 20:25 | 5 | Sitthikom Thammasin v Brian Yang | L | 1-2 | |
| World Championships | 12/12 08:40 | 6 | Tien Chen Chou v Sitthikom Thammasin | L | 2-0 | |
| Indonesia Open | 11/23 05:00 | - | Shesar Hiren Rhustavito v Sitthikom Thammasin | L | 2-1 | |
| Indonesia Masters | 11/17 05:40 | 5 | Sitthikom Thammasin v Jonatan Christie | L | 1-2 | |
| All England Open | 03/19 12:00 | 3 | Sitthikom Thammasin v Viktor Axelsen | L | 0-2 | |
| All England Open | 03/19 10:00 | 4 | Sitthikom Thammasin v Jonatan Christie | - | Walkover | |
| All England Open | 03/17 15:10 | 5 | Pablo Abian v Sitthikom Thammasin | W | 0-2 | |
| Swiss Open | 03/03 11:35 | 5 | Ajay Jayaram v Sitthikom Thammasin | L | 2-0 | |
| Thailand Open | 01/19 02:40 | 5 | Srikanth Kidambi v Sitthikom Thammasin | L | 2-0 | |
| Thailand Open | 01/12 05:10 | 5 | Viktor Axelsen v Sitthikom Thammasin | L | 2-0 | |
| All England Open | 03/11 20:00 | 5 | Sitthikom Thammasin v Viktor Axelsen | L | 0-2 | |
| Hong Kong Open | 11/13 12:35 | 5 | Cheuk Yiu Lee v Sitthikom Thammasin | L | 2-0 | |
| China Open | 11/06 04:25 | 5 | Kashyap Parupalli v Sitthikom Thammasin | L | 2-0 | |
| Macau Open | 11/03 05:00 | 1 | Yu Qi Shi v Sitthikom Thammasin | W | 1-2 | |
| Macau Open | 11/02 06:20 | 2 | Sitthikom Thammasin v Fei Xiang Sun | W | 2-1 | |
| Macau Open | 11/01 07:00 | 3 | Sitthikom Thammasin v Kodai Naraoka | W | 2-0 | |
| Macau Open | 10/31 05:20 | 4 | Dong Keun Lee v Sitthikom Thammasin | W | 0-2 | |
| Macau Open | 10/30 02:20 | 5 | Joo Ven Soong v Sitthikom Thammasin | W | 1-2 | |
| French Open | 10/22 10:50 | 5 | Sitthikom Thammasin v Shesar Hiren Rhustavito | L | 0-2 | |
| Denmark Open | 10/18 14:20 | 3 | Sitthikom Thammasin v Tommy Sugiarto | L | 0-2 | |
| Denmark Open | 10/17 07:20 | 4 | Mark Caljouw v Sitthikom Thammasin | W | 1-2 | |
| Denmark Open | 10/15 07:20 | 5 | Sitthikom Thammasin v Kashyap Parupalli | W | 2-0 | |
| Korea Open | 09/25 12:00 | 5 | Sitthikom Thammasin v Tien Chen Chou | L | 0-2 | |
| China Open | 09/17 03:30 | 5 | Daren Liew v Sitthikom Thammasin | L | 2-1 | |
| Akita Masters | 08/15 03:55 | 4 | Sitthikom Thammasin v Hashiru Shimono | L | 1-2 | |
| Akita Masters | 08/14 00:00 | 5 | Sitthikom Thammasin v Chun Yi Lin | W | 2-1 |