| Czech TT Star Series | 2020/10/09 10:45 | Antonin Gavlas v Boguslav Koszyk | L | 3-0 |
| Czech TT Star Series | 2020/10/09 08:15 | Petr David v Boguslav Koszyk | L | 3-2 |
| Czech TT Star Series | 2020/10/09 06:35 | Horacio Cifuentes v Boguslav Koszyk | L | 3-1 |
| Czech TT Star Series | 2020/10/08 13:45 | Boguslav Koszyk v Michal Obeslo | L | 2-3 |
| Czech TT Star Series | 2020/10/08 11:45 | Boguslav Koszyk v Dmitrij Prokopcov | L | 1-3 |
| Czech TT Star Series | 2020/10/08 09:15 | Boguslav Koszyk v Andrei Putuntica | L | 1-3 |
| Czech TT Star Series | 2020/10/08 07:45 | Daniele Pinto v Boguslav Koszyk | W | 1-3 |
| Czech TT Star Series | 2020/10/06 11:45 | Boguslav Koszyk v Tomas Tregler | L | 0-3 |
| Paraguay Open U21 Women | 2019/07/17 18:00 | Goncalo Baptista v Pawel Koziel | W | 0-3 |