| Open de Suède | 01/18 10:00 | - | Svendsen, Victor v Kalle Koljonen | L | 2-0 | |
| Open de Suède | 01/17 16:30 | - | Kalle Koljonen v Joe, Anthony | W | 2-0 | |
| Open de Suède | 01/17 11:30 | - | Kalle Koljonen v Mads Christophersen | W | 2-1 | |
| Estonie Int. - | 01/10 18:40 | - | Lehikoinen, Kasper v Kalle Koljonen | - | home | |
| Estonie Int. - | 01/10 09:40 | - | Tang, Kai Feng v Kalle Koljonen | W | 1-2 | |
| Italian Int. | 12/13 10:00 | - | Kalle Koljonen v Luis Enrique Penalver | L | 0-2 | |
| Scottish Open | 11/21 20:20 | 5 | Kalle Koljonen v Ho-Shue, Jason Anthony | L | 0-2 | |
| Irish Open | 11/14 10:00 | 5 | Burestedt, Felix v Kalle Koljonen | - | Retired | |
| Hungarian Int. | 11/01 12:00 | 4 | Kalle Koljonen v Sirant, Sergey | L | 1-2 | |
| Hungarian Int. | 10/31 12:40 | 5 | Kalle Koljonen v Fabio Caponio | W | 2-0 | |
| Dutch Open | 10/08 14:20 | 6 | Must, Raul v Kalle Koljonen | L | 2-0 | |
| Kharkiv International 2019, MS | 09/06 08:30 | 5 | Joran Kweekel v Kalle Koljonen | L | 2-0 | |
| World Championships | 08/19 09:00 | 6 | Kenta Nishimoto v Kalle Koljonen | L | 2-0 | |
| Hyderabad Open 2019, MS | 08/09 11:30 | 3 | Heo, Kwang Hee v Kalle Koljonen | L | 2-0 | |
| Hyderabad Open 2019, MS | 08/08 06:30 | 4 | Shesar Hiren Rhustavito v Kalle Koljonen | W | 0-2 | |
| Hyderabad Open 2019, MS | 08/07 05:30 | 5 | Kalle Koljonen v Marteen, Andre | W | 2-1 | |
| Russia Open 2019, MS | 07/17 00:00 | 6 | Wong, H. S. v Kalle Koljonen | - | Walkover | |
| White Nights | 07/13 13:30 | - | Kalle Koljonen v Zulkarnain, I. | L | 1-2 | |
| White Nights | 07/13 07:30 | - | Kiran George v Kalle Koljonen | W | 1-2 | |
| White Nights | 07/12 15:45 | - | Nhat Nguyen v Kalle Koljonen | W | 1-2 | |
| White Nights | 07/12 09:30 | - | Kalle Koljonen v Malkov, Vladimir | W | 2-0 | |
| White Nights | 07/11 10:30 | - | Kalle Koljonen v Durkinjak, Zvonimir | W | 2-0 | |
| Azerbaïdjan Int. | 06/09 07:00 | - | Kalle Koljonen v Burestedt, Felix | L | 1-2 | |
| Azerbaïdjan Int. | 06/08 07:30 | - | Kalle Koljonen v Toma Junior Popov | W | 2-0 | |
| Azerbaïdjan Int. | 06/07 13:30 | - | Kalle Koljonen v Sirant, Sergey | W | 2-0 | |
| Slovenia Int. | 05/16 08:30 | - | Kalle Koljonen v Kartikey Gulshan Kumar | W | 2-1 | |
| Denmark Int. | 05/10 09:00 | - | Joergensen, J. O. v Kalle Koljonen | W | 0-2 | |
| Finnish Open | 04/05 16:45 | - | Chun-Yi Lin v Kalle Koljonen | L | 2-0 | |
| Finnish Open | 04/05 09:00 | - | Moreels, Maxime v Kalle Koljonen | W | 0-2 | |
| Open de Suisse | 03/13 09:50 | 5 | Kalle Koljonen v Ygor Coelho | L | 1-2 |