| TT Star Series | 2021/10/04 07:45 | Tomas Koldas v Boguslav Koszyk | W | 1-3 |
| Challenger Ochsenhausen | 2021/09/10 16:56 | Patryk Zatowka v Boguslav Koszyk | W | 1-3 |
| TT Star Series | 2021/01/26 12:45 | Tomas Tregler v Boguslav Koszyk | L | 3-0 |
| TT Star Series | 2021/01/26 10:45 | Boguslav Koszyk v Michal Obeslo | L | 1-3 |
| TT Star Series | 2021/01/26 08:10 | Dmitrij Prokopcov v Boguslav Koszyk | L | 3-2 |
| TT Star Series | 2021/01/25 15:45 | Petr David v Boguslav Koszyk | L | 3-1 |
| TT Star Series | 2021/01/25 12:15 | Ondrej Bajger v Boguslav Koszyk | L | 3-1 |
| TT Star Series | 2021/01/25 09:45 | Miroslav Horejsi v Boguslav Koszyk | W | 2-3 |
| TT Star Series | 2021/10/04 06:00 | Enio Mendes v Radim Bako | L | 3-0 |
| Czech Open | 2021/08/22 11:30 | Viktor Yefimov v Radim Bako | L | 3-1 |
| Czech Open | 2021/08/21 09:50 | Radim Bako v Martin Guman | L | 1-3 |
| TT Star Series | 2021/07/16 11:45 | Radim Bako v Miroslav Sklensky | W | 3-1 |
| TT Star Series | 2021/07/16 08:45 | Radim Bako v Oleksandr Tymofieiev | L | 0-3 |
| TT Star Series | 2021/07/16 06:35 | Radim Bako v Jordy Piccolin | L | 0-3 |
| TT Star Series | 2021/07/15 12:45 | Radim Bako v Petr David | L | 0-3 |
| TT Star Series | 2021/07/15 10:15 | Radim Bako v Tomas Konecny | L | 0-3 |