Stadium: Court 2 Round: 54 Ground: Clay
| ITF M25 Pardubice | 2021/09/22 09:00 | Tomas Lanik v Matthew William Donald | 2-6,2-6 |
| ITF M25 Pardubice | 2021/09/21 09:45 | Oscar Galimardanov v Tomas Lanik | 2-6,7-6,8-10 |
| ITF M25 Pardubice | 2021/09/20 10:00 | Tomas Lanik v Alan F R Fierros | 2-6,6-4,10-6 |
| ITF M15 Žilina | 2021/08/31 09:30 | Dominik Kellovsky v Tomas Lanik | 6-1,6-4 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Tomas Lanik v Sean Hess | 5-7,4-6 |
| ITF M15 Bratislava | 2021/08/18 08:00 | Tomas Lanik v Mate Valkusz | 3-6,3-6 |
| ITF M15 Bratislava | 2021/08/17 08:00 | Leyton Rivera v Tomas Lanik | 6-7,2-6 |
| ITF M15 Bratislava | 2021/08/16 10:30 | Tomas Lanik v Milos Karol | 4-6,7-5,12-10 |
| UTR Pro Tennis Series - Říčany | 2021/09/16 08:30 | Jiri Barnat v Matyas Cerny | 6-7,0-0 |
| UTR Pro Tennis Series - Říčany | 2021/09/15 10:30 | Antonin Bolardt v Jiri Barnat | 3-6,6-3,1-6 |
| UTR Pro Tennis Series - Říčany | 2021/09/14 15:00 | Dominik Recek v Jiri Barnat | 6-4,5-4 |
| UTR Pro Tennis Series - Říčany | 2021/09/11 12:00 | Jiri Barnat v Martins Podzus | 0-6,3-5 |
| UTR Pro Tennis Series - Říčany | 2021/09/10 09:00 | Maxence Broville v Jiri Barnat | 4-6,2-5 |
| UTR Pro Tennis Series - Říčany | 2021/09/09 11:30 | Marek Jaloviec v Jiri Barnat | 6-2,1-6,5-4 |
| UTR Pro Tennis Series - Říčany | 2021/09/08 09:00 | Nikolaj Katic v Jiri Barnat | 1-6,0-2 |
| UTR Pro Tennis Series - Říčany | 2021/09/06 09:00 | Krystof Zapsky v Jiri Barnat | 0-6,3-6 |