Stadium: Court 3 Round: 25 Ground: Clay
| Challenger Salzburg | 2023/07/09 10:50 | Matthias Ujvary v Alex Barrena | 2-6,3-6 |
| ITF M15 Celje | 2023/06/28 11:10 | Matthias Ujvary v Vito Tonejc | 4-6,3-6 |
| ITF M15 Sarajevo | 2023/06/06 12:35 | Jakub Paul v Matthias Ujvary | 6-3,7-5 |
| Challenger Mauthausen | 2023/05/09 14:45 | Dominic Thiem v Matthias Ujvary | 6-4,6-2 |
| Challenger Mauthausen | 2023/05/08 09:35 | Matthias Ujvary v Branko Djuric | 6-4,6-2 |
| Challenger Mauthausen | 2023/05/07 13:20 | Beibit Zhukayev v Matthias Ujvary | 2-6,4-6 |
| ITF M15 Kursumlijska Banja | 2023/04/28 09:25 | Mili Poljicak v Matthias Ujvary | 6-4,6-1 |
| ITF M15 Kursumlijska Banja | 2023/04/27 10:05 | Luca Giacomini v Matthias Ujvary | 3-6,2-6 |
| ITF M25 Telfs | 2023/07/17 10:00 | Ondrej Horak v Maurus Malgiaritta | 6-3,6-4 |
| ITF M25 Telfs | 2023/07/16 13:00 | Ondrej Horak v Elias Julian Werner | 6-4,7-5 |
| 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 |