| Singapore Open - Kwal. | 07/12 01:20 | - | Kai Schaefer v Kalle Koljonen | L | 2-0 | |
| Europese kampioenschappen | 04/26 10:20 | - | Mark Caljouw v Kalle Koljonen | L | 2-1 | |
| Korea Masters | 04/14 01:00 | - | Misha Zilberman v Kalle Koljonen | L | 2-1 | |
| Korea Masters | 04/12 05:00 | 5 | Kalle Koljonen v Joo Wan Kim | W | 2-0 | |
| Korea Open | 04/05 03:30 | 5 | Kalle Koljonen v Tze Yong Ng | L | 0-2 | |
| Swiss Open | 03/24 12:20 | - | Kalle Koljonen v H.S. Prannoy | L | 1-2 | |
| Swiss Open | 03/23 14:20 | - | Kalle Koljonen v Toby Penty | W | 2-0 | |
| German Open | 03/09 11:30 | 5 | Kwanghee Heo v Kalle Koljonen | L | 2-1 | |
| India Open | 01/13 07:10 | 4 | Kalle Koljonen v Sergey Sirant | L | 0-2 | |
| India Open | 01/11 06:30 | 5 | Kartikey Gulshan Kumar v Kalle Koljonen | W | 0-2 | |
| Wereldkampioenschappen | 12/14 09:00 | 6 | Mark Caljouw v Kalle Koljonen | L | 2-1 | |
| Wereldkampioenschappen | 12/12 09:40 | 6 | Lino Munoz v Kalle Koljonen | W | 0-2 | |
| Dutch Open | 10/16 08:20 | - | Kalle Koljonen v Pablo Abian | L | 1-2 | |
| Dutch Open | 10/15 12:00 | - | Mads Christophersen v Kalle Koljonen | W | 0-2 | |
| Dutch Open | 10/14 07:40 | - | Kalle Koljonen v Ajay Jayaram | W | 2-1 | |
| Sudirman Cup | 09/29 13:30 | - | Srikanth Kidambi v Kalle Koljonen | L | 2-1 | |
| Sudirman Cup | 09/26 07:20 | - | Guangzu Lu v Kalle Koljonen | L | 2-0 | |
| Olympische Spelen 2020 - Heren | 07/28 09:40 | 1 | Viktor Axelsen v Kalle Koljonen | L | 2-0 | |
| Olympische Spelen 2020 - Heren | 07/26 01:40 | 1 | Kalle Koljonen v Luka Wraber | W | 2-0 | |
| Europese kampioenschappen | 05/01 15:00 | 2 | Viktor Axelsen v Kalle Koljonen | L | 2-0 | |
| Europese kampioenschappen | 04/30 15:00 | 3 | Rasmus Gemke v Kalle Koljonen | W | 0-2 | |
| Europese kampioenschappen | 04/29 07:40 | 4 | Toma Junior Popov v Kalle Koljonen | W | 0-2 | |
| Europese kampioenschappen | 04/28 11:20 | 1 | Kalle Koljonen v Bernardo Atilano | W | 2-0 | |
| EK teams | 02/18 16:00 | - | Fabian Roth v Kalle Koljonen | L | 2-0 | |
| EK teams | 02/17 16:00 | - | Ciar Pringle v Kalle Koljonen | W | 0-2 | |
| Denmark Open | 10/13 14:40 | 5 | Mark Caljouw v Kalle Koljonen | L | 2-1 | |
| Austrian Open | 02/21 11:00 | 4 | Chia Hao Lee v Kalle Koljonen | L | 2-0 | |
| Austrian Open | 02/20 15:30 | 5 | Kalle Koljonen v Rahul Yadav Chittaboina | W | 2-0 | |
| EK teams | 02/12 08:00 | - | Kalle Koljonen v Peter Roenn Stensaeth | W | 2-0 | |
| EK teams | 02/11 15:00 | - | Kalle Koljonen v Artem Pochtarov | W | 2-0 |