Estádio: Court 8 Round: 62 Ground: Clay
| ITF - M25 Monastir | 2022/03/20 08:00 | Takuya Kumasaka v Roman Ruenger | 6-1,6-0 |
| ITF - M25 Manacor | 2022/01/10 17:30 | Stefanos Sakellaridis v Roman Ruenger | 7-5,6-4 |
| ITF - M15 Monastir | 2021/12/12 10:00 | Roman Ruenger v Alessandro Bellifemine | 2-6,5-7 |
| ITF - M15 Monastir | 2021/12/05 09:00 | Roman Ruenger v Mattias Southcombe | 3-6,5-7 |
| ITF - M15 Parnu | 2021/10/25 07:00 | Roman Ruenger v Timofey Stepanov | 2-6,1-6 |
| ITF - M25 Ricany | 2021/08/29 10:30 | Roman Ruenger v Filip Kana | 4-6,2-6 |
| ITF - M15 Šibenik | 2021/05/17 14:40 | Rimpei Kawakami v Roman Ruenger | 6-2,6-2 |
| ITF - M15 Šibenik | 2021/05/16 12:30 | Liam Schiemann v Roman Ruenger | 3-6,2-6 |
| ITF - M25 Praga | 2022/05/08 08:00 | Gregor Hausberger v Jasza Szajrych | 6-4,7-6 |
| ITF - M15 Antália | 2022/02/01 06:00 | Leonid Sheyngezikht v Gregor Hausberger | 6-0,6-0 |
| ITF - M25 Kottingbrunn | 2021/07/20 09:45 | Tadeas Paroulek v Gregor Hausberger | 6-1,6-3 |
| ITF - M25 Kottingbrunn | 2021/07/19 13:15 | Gregor Hausberger v Samuel Puskar | 4-6,6-3,10-7 |