| Estonie Int. - Qualif. | 2020/01/09 15:30 | Kilpi, Justus v Tang, Kai Feng | W | 0-2 |
| Estonie Int. - Qualif. | 2020/01/09 13:00 | Tang, Kai Feng v Yu, Sheng Po | W | 2-0 |
| Estonie Int. - Qualif. | 2020/01/09 10:40 | Hudekar, Siddhesh v Tang, Kai Feng | W | 0-2 |
| Italian Int. | 2019/12/13 10:00 | Kalle Koljonen v Luis Enrique Penalver | L | 0-2 |
| Scottish Open | 2019/11/21 20:20 | Kalle Koljonen v Ho-Shue, Jason Anthony | L | 0-2 |
| Hungarian Int. | 2019/11/01 12:00 | Kalle Koljonen v Sirant, Sergey | L | 1-2 |
| Hungarian Int. | 2019/10/31 12:40 | Kalle Koljonen v Fabio Caponio | W | 2-0 |
| Dutch Open | 2019/10/08 14:20 | Must, Raul v Kalle Koljonen | L | 2-0 |
| Kharkiv International 2019, MS | 2019/09/06 08:30 | Joran Kweekel v Kalle Koljonen | L | 2-0 |
| World Championships | 2019/08/19 09:00 | Kenta Nishimoto v Kalle Koljonen | L | 2-0 |
| Hyderabad Open 2019, MS | 2019/08/09 11:30 | Heo, Kwang Hee v Kalle Koljonen | L | 2-0 |