Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Caslano | 2023/08/22 09:25 | Niklas Waldner v Carlo Alberto Fossati | 1-6,6-4,6-7 |
| ITF M15 Kottingbrunn | 2023/08/13 08:00 | Niklas Waldner v Marcell Bartakovics | 1-6,2-6 |
| ITF M25 Bolzano | 2023/07/31 08:50 | Niklas Waldner v Noah Perfetti | 0-6,6-3,2-10 |
| ITF M25 Bolzano | 2023/07/30 12:30 | Niklas Waldner v Serafin Zund | 6-2,2-6,10-4 |
| ITF M25 Kramsach | 2023/07/26 12:20 | Niklas Waldner v Buvaysar Gadamauri | 2-6,7-6,4-6 |
| ITF M25 Telfs | 2023/07/19 09:55 | Alex Barrena v Niklas Waldner | 6-4,6-4 |
| Challenger Salzburg | 2023/07/09 08:30 | Niklas Waldner v Mohamed Safwat | 3-6,5-7 |
| ITF M25 Klosters | 2023/07/06 08:40 | Niklas Waldner v Damien Wenger | 1-6,2-6 |
| ITF M25 Osijek | 2023/08/07 13:55 | Alexandar Balj v Romeo Hadzimehmedovic | 2-6,5-7 |
| ITF M15 Kursumlijska Banja | 2023/06/19 07:30 | Alexandar Balj v Nicolas Villalon | 5-7,2-6 |
| ITF M25 Skopje | 2023/06/04 07:00 | Alexandar Balj v Christos Keisidis | 4-6,2-6 |
| ITF M15 Kursumlijska Banja | 2023/05/31 10:20 | Alexandar Balj v Gorazd Srbljak | 5-7,4-6 |
| ITF M15 Kursumlijska Banja | 2023/05/23 14:00 | Kristjan Tamm v Alexandar Balj | 6-4,6-3 |
| ITF M25 Kursumlijska Banja | 2023/05/14 09:30 | Pavle Daljev v Alexandar Balj | 6-1,6-0 |
| ITF M25 Kursumlijska Banja | 2023/05/08 12:20 | Chukang Wang v Alexandar Balj | 6-4,6-4 |
| ITF M25 Kursumlijska Banja | 2023/05/07 08:00 | Alexandar Balj v Filip Cebic | 6-4,6-4 |