Stadium: Court 1 Round: 62 Ground: Clay
| ITF M25 - Poprad | 2023/06/19 08:00 | Ondrej Horak v Tomas Vaise | 4-6,4-6 |
| ITF M25 - Poprad | 2023/06/18 08:00 | Ondrej Horak v Tomas Krcma | 6-2,6-2 |
| ITF M25 - Jablonec Nad Nisou | 2023/05/31 13:50 | Evgeny Karlovskiy v Ondrej Horak | 7-6,6-2 |
| ITF M25 - Jablonec Nad Nisou | 2023/05/30 07:55 | Thijmen Loof v Ondrej Horak | 6-7,3-6 |
| ITF M25 - Jablonec Nad Nisou | 2023/05/28 09:00 | Vojtech Mares v Ondrej Horak | 5-7,0-6 |
| ITF M25 - Most | 2023/05/22 09:00 | Victor Sklenka v Ondrej Horak | 2-6,7-5,10-4 |
| ITF M25 - Most | 2023/05/21 10:30 | Nico Jaeger v Ondrej Horak | 5-7,4-6 |
| Tjeckien - Extraliga | 2022/12/13 09:00 | Ondrej Horak v Marek Jaloviec | 3-6,4-5 |
| ITF M25 - Telfs | 2023/07/16 07:00 | Elias Julian Werner v Niklas Koch | 6-3,6-0 |
| ITF M25 - Netanya | 2023/06/25 08:00 | Amit Vales v Elias Julian Werner | 7-5,6-2 |
| ITF M25 - Netanya | 2023/06/18 06:30 | Elias Julian Werner v Ido Geva | 7-5,6-7,8-10 |
| ITF M15 - Sarajevo | 2023/06/05 08:00 | Elias Julian Werner v Noah Schlagenhauf | 1-6,6-7 |
| ITF M25 - Kiseljak | 2023/05/29 07:00 | Zak Talic v Elias Julian Werner | 6-3,6-2 |
| ITF M25 - Kiseljak | 2023/05/28 09:30 | Elias Julian Werner v Dimitrije Zubac | 6-7,7-5,10-7 |
| ITF M25 - Most | 2023/05/21 09:00 | Christian Fellin v Elias Julian Werner | 6-1,6-3 |
| ITF M15 - Doboj | 2023/05/08 10:30 | Zak Talic v Elias Julian Werner | 6-1,6-0 |