Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| 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 Sibenik | 2021/05/17 14:40 | Rimpei Kawakami v Roman Ruenger | 6-2,6-2 |
| ITF M15 Sibenik | 2021/05/16 12:30 | Liam Schiemann v Roman Ruenger | 3-6,2-6 |
| ITF Netherlands F5 | 2018/08/18 08:00 | Kevin Kaczynski v Roman Ruenger | 6-1,6-0 |
| ITF M15 Monastir | 2021/12/06 10:30 | Alessandro Bellifemine v Rhys Searant | 4-6,3-6 |
| ITF M15 Monastir | 2021/12/05 11:30 | Alessandro Bellifemine v Natthayut Nithithananont | 6-1,6-0 |
| ITF M15 Monastir | 2021/11/28 10:00 | Sami Ben Abdennibi v Alessandro Bellifemine | 6-3,7-6 |
| ITF M15 Cairo | 2021/09/06 07:30 | Bruno P Navarro v Alessandro Bellifemine | 6-4,6-0 |
| ITF M15 Cairo | 2021/08/31 08:00 | Jordi Garcia Mestre v Alessandro Bellifemine | 1-6,6-3,10-4 |
| ITF M15 Cairo | 2021/08/30 12:30 | Pavel Kravchenko v Alessandro Bellifemine | 4-6,0-6 |
| ITF M25 Bacau | 2021/08/17 07:00 | Vasile Antonescu v Alessandro Bellifemine | 7-6,6-3 |
| ITF M25 Velenje | 2021/07/07 12:25 | Pavel Nejedly v Alessandro Bellifemine | 6-3,7-5 |