| UTR Pro Tennis Series Ricany | 2021/09/11 10:30 | Dominik Kellovsky v Stefanos Sakellaridis | 7-5,5-1 |
| UTR Pro Tennis Series Ricany | 2021/09/09 13:40 | Dominik Kellovsky v Jiri Jenicek | 2-6,6-4,6-1 |
| UTR Pro Tennis Series Ricany | 2021/09/08 09:00 | Dominik Kellovsky v Marcelo Zormann | 6-4,5-1 |
| UTR Pro Tennis Series Ricany | 2021/09/07 10:30 | Dominik Kellovsky v Janos Fekete | 0-6,0-5 |
| UTR Pro Tennis Series Ricany | 2021/09/06 07:30 | Dominik Kellovsky v Martins Podzus | 3-6,7-5,4-6 |
| ITF M15 Zilina | 2021/09/01 10:55 | Lukas H Lilleengen v Dominik Kellovsky | 6-4,1-6,7-6 |
| ITF M15 Zilina | 2021/08/31 09:30 | Dominik Kellovsky v Tomas Lanik | 6-1,6-4 |
| ITF M15 Zilina | 2021/08/30 11:30 | Dominik Kellovsky v Sven Corbinais | 3-6,6-2,10-6 |
| UTR Pro Tennis Series Ricany | 2021/09/11 07:30 | Krystof Zapsky v Yanais Laurent | 6-2,6-4 |
| UTR Pro Tennis Series Ricany | 2021/09/10 10:30 | Adam Krischke v Krystof Zapsky | 4-6,1-3 |
| UTR Pro Tennis Series Ricany | 2021/09/07 12:30 | Marek Jaloviec v Krystof Zapsky | 6-3,3-6,5-1 |
| UTR Pro Tennis Series Ricany | 2021/09/06 09:00 | Krystof Zapsky v Jiri Barnat | 0-6,3-6 |
| ITF M25 Ricany | 2021/08/30 09:00 | Marcelo Zormann v Krystof Zapsky | 6-2,6-3 |
| ITF M25 Ricany | 2021/08/29 10:30 | Lars Aregger v Krystof Zapsky | 6-7,2-6 |
| ITF M15 Lodz | 2021/08/16 08:00 | Kamil Gajewski v Krystof Zapsky | 6-3,6-3 |
| Challenger Prague | 2021/08/08 08:30 | Franco Agamenone v Krystof Zapsky | 6-2,6-3 |