Stadium: Court 4 Round: 25 Ground: Clay
| Challenger Cassis | 2023/09/03 10:40 | Aidan Mchugh v Alexander Donski | 6-2,6-3 |
| Challenger Prague | 2023/08/21 08:00 | Pawel Juszczak v Alexander Donski | 7-6,7-6 |
| Challenger Prague | 2023/08/20 08:00 | Alexander Donski v Luca Potenza | 6-2,6-3 |
| ITF M15 Metzingen | 2023/07/26 12:30 | Stefan Popovic v Alexander Donski | 2-6,6-3,7-5 |
| ITF M15 Celje | 2023/06/28 12:00 | Alexander Donski v Pawel Juszczak | 5-7,4-6 |
| ITF M15 Store | 2023/06/22 07:30 | Luca Wiedenmann v Alexander Donski | 6-2,6-3 |
| ITF M15 Litija | 2023/06/15 10:00 | Tomas Farjat v Alexander Donski | 7-5,6-2 |
| ITF M15 Litija | 2023/06/14 12:15 | Tomas Jirousek v Alexander Donski | 2-6,3-6 |
| ITF M25 Pardubice | 2023/09/22 08:55 | Eric Vanshelboim v Jiri Barnat | 7-6,3-6,6-4 |
| ITF M25 Pardubice | 2023/09/21 07:55 | Maxim Mrva v Jiri Barnat | 3-6,1-6 |
| ITF M25 Pardubice | 2023/09/20 10:10 | Aleksander Chayka v Jiri Barnat | 1-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2023/09/01 12:20 | Timo Stodder v Jiri Barnat | 7-6,6-0 |
| ITF M25 Jablonec Nad Nisou | 2023/08/31 10:40 | Petr Michnev v Jiri Barnat | 6-7,2-6 |
| ITF M25 Jablonec Nad Nisou | 2023/08/30 08:00 | Tristan Nitschke v Jiri Barnat | 2-6,2-6 |
| Challenger Prague | 2023/08/20 13:10 | Jiri Barnat v Kirill Kivattsev | 4-6,1-6 |
| ITF M25 Bielsko Biala | 2023/08/18 08:25 | Daniel Paty v Jiri Barnat | 6-2,7-6 |