| Giraldilla Int. XD | 2018/11/03 07:09 | Lee, Hyun Il v Thammasin, S. | L | 2-1 |
| Macau Open 2019, MS | 2018/11/03 05:30 | Lee, Hyun Il v Thammasin, S. | L | 2-1 |
| Macau Open 2019, MS | 2018/11/02 05:40 | Thammasin, S. v Kholik, Firman Abdul | W | 2-0 |
| Macau Open 2019, MS | 2018/11/01 12:15 | Thammasin, S. v Lin, Yu Hsien | W | 2-1 |
| Macau Open 2019, MS | 2018/10/31 09:00 | Thammasin, S. v Heo, Kwang Hee | W | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/09/20 08:00 | Lakshya Sen v Thammasin, S. | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/09/19 04:00 | Maruo, Ryotaro v Thammasin, S. | W | 0-2 |
| Giraldilla Int. XD | 2018/08/09 12:25 | Tien Minh Nguyen v Thammasin, S. | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/11/20 12:30 | Joshi, Bodhit v Tan, Jia Wei | W | 1-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/11/20 03:33 | Tan, Jia Wei v Aryamann Tandon | W | 2-0 |
| Dutch Open | 2018/10/10 11:55 | Toby Penty v Tan, Jia Wei | L | 2-0 |
| Giraldilla Int. XD | 2018/07/24 07:20 | Siddharth Pratap Singh v Tan, Jia Wei | L | 2-0 |
| Giraldilla Int. XD | 2018/03/23 13:00 | Yu Jen Chi v Tan, Jia Wei | L | 2-0 |
| Giraldilla Int. XD | 2018/03/22 10:25 | Tan, Jia Wei v Duc Phat Le | W | 2-0 |
| Giraldilla Int. XD | 2018/01/10 13:15 | Thongnuam, Pannawit v Tan, Jia Wei | L | 2-0 |
| Indonesia Masters XD | 2017/11/28 10:30 | Tan, Jia Wei v Hwang, Jong Soo | L | 0-2 |