Stadium: Court 1 Round: 25 Ground: Clay
| ITF - M15 Celje | 2023/06/28 14:15 | Jonas Trinker v Kalender, Admir | 6-1,6-4 |
| ITF M15 Litija | 2023/06/15 07:50 | Gal Emersic Potocnik v Kalender, Admir | 6-3,2-6,4-6 |
| ITF M15 Litija | 2023/06/13 07:00 | Kalender, Admir v Roko Horvat | 1-6,6-3,6-4 |
| ITF M15 Krsko | 2023/05/19 11:40 | Kalender, Admir v Lucas Poullain | 2-6,4-6 |
| ITF M15 Krsko | 2023/05/18 14:55 | Lukas Palovic v Kalender, Admir | 2-6,6-4,2-6 |
| ITF - M15 Doboj | 2023/05/08 08:00 | Kalender, Admir v Daniele Minighini | 4-6,6-3,2-10 |
| ITF - M15 Kursumlijska Banja | 2023/04/26 07:00 | Kalender, Admir v Petr Nesterov | 2-6,6-7 |
| ITF M15 Vilnius | 2023/01/16 09:20 | Kalender, Admir v Jesse De Jager | 3-6,4-6 |
| ITF M25 Pitesti | 2023/08/02 11:45 | Valentin Vanta v Dumitru, Vlad Andrei | 6-1,6-2 |
| ITF M25 Bacau | 2023/07/26 14:25 | Luca Giacomini v Dumitru, Vlad Andrei | 6-3,6-4 |
| ITF M25 Brasov | 2023/07/04 08:00 | Dumitru, Vlad Andrei v Madaras, Dragos Nicolae | 2-6,0-6 |
| ITF M25 Brasov | 2023/07/03 08:20 | Dumitru, Vlad Andrei v Wunder, Markus | 6-2,6-3 |
| ITF M25 Brasov | 2023/07/02 06:30 | Dumitru, Vlad Andrei v Mihnea Petru Zaharia | 7-5,6-0 |
| ITF M15 Cluj Napoca | 2023/06/20 08:05 | Dumitru, Vlad Andrei v Vlad Andrei Dancu | 4-6,1-6 |
| ITF M15 Cluj Napoca | 2023/06/19 08:55 | Valerio Perruzza v Dumitru, Vlad Andrei | 6-2,6-2 |
| ITF M15 Cluj Napoca | 2023/06/18 10:30 | Munteanu, Dan Radu v Dumitru, Vlad Andrei | 3-6,0-6 |