Stadium: Court 4 Round: 25 Ground: Clay
| ITF M15 Frankfurt Am Main | 2023/08/07 16:00 | Gregor Ramskogler v Mark Wallner | 6-4,7-5 |
| ITF M15 Ueberlingen | 2023/08/15 08:30 | Gregor Ramskogler v Davud Amirov | 6-1,1-6,10-6 |
| ITF M15 Ueberlingen | 2023/08/14 12:30 | Gregor Ramskogler v Jakub Ostajewski | 6-4,6-1 |
| ITF M15 Frankfurt Am Main | 2023/08/10 12:50 | Aleksandre Metreveli v Gregor Ramskogler | 6-4,6-2 |
| ITF M15 Frankfurt Am Main | 2023/08/09 12:20 | Gregor Ramskogler v Dax Donders | 6-3,6-7,6-3 |
| ITF M15 Frankfurt Am Main | 2023/08/07 16:00 | Gregor Ramskogler v Mark Wallner | 6-4,7-5 |
| ITF M15 Frankfurt Am Main | 2023/08/07 10:00 | Gregor Ramskogler v Bengt Johan Reinhard | 6-2,6-4 |
| ITF M15 Fayetteville | 2022/09/22 14:00 | Gregor Ramskogler v Warren Wood | 7-5,4-6,0-6 |
| ITF M15 Fayetteville | 2022/09/21 16:15 | Osgar O'Hoisin v Gregor Ramskogler | 6-7,3-6 |
| ITF M15 Ueberlingen | 2023/08/14 08:00 | Daniel L Salmeron v Mark Wallner | 1-6,6-7 |
| ITF M15 Frankfurt Am Main | 2023/08/07 16:00 | Gregor Ramskogler v Mark Wallner | 6-4,7-5 |
| ITF M15 Frankfurt Am Main | 2023/08/07 10:00 | Mark Wallner v Giuseppe La Vela | 6-4,7-5 |
| ITF M15 Celje | 2023/06/27 07:00 | Gian Marco Ortenzi v Mark Wallner | 6-4,6-4 |
| ITF M15 Celje | 2023/06/26 11:40 | Mark Wallner v Alexander Klintcharov | 6-2,7-6 |
| ITF M15 Litija | 2023/06/12 07:00 | Corey Gaal v Mark Wallner | 3-6,6-3,12-10 |
| ITF M25 Jablonec Nad Nisou | 2023/05/29 08:00 | Luca Wiedenmann v Mark Wallner | 6-4,6-3 |
| ITF M25 Jablonec Nad Nisou | 2023/05/28 08:00 | Mark Wallner v Maurus Malgiaritta | 6-1,6-0 |