Stadium: Center Court Round: 54 Ground: Hardcourt indoor
| ITF M25 Prague | 2021/10/04 12:30 | Boris Fassbender v Dominik Recek | 7-5,6-2 |
| ITF M25 Prague | 2021/10/03 13:00 | Boris Fassbender v Svyatoslav Ilnytskyy | 7-5,6-4 |
| ITF M15 Forbach | 2021/10/01 10:00 | Boris Fassbender v Luke Johnson | 3-6,5-7 |
| ITF M15 Forbach | 2021/09/30 16:20 | Boris Fassbender v Marlon Vankan | 6-2,6-4 |
| ITF M15 Forbach | 2021/09/29 15:35 | Gauthier Onclin v Boris Fassbender | 4-6,4-6 |
| ITF M25 Angers | 2021/04/18 11:00 | Simon Reveniau v Boris Fassbender | 6-4,4-6,10-6 |
| ITF M15 Poitiers | 2021/03/14 13:20 | Hugo Voljacques v Boris Fassbender | 7-6,7-5 |
| ITF M15 Grenoble | 2021/02/07 08:30 | Pierre Delage v Boris Fassbender | 6-4,6-2 |
| ITF M25 Saint Dizier | 2021/10/31 12:00 | Arthur Gea v Adrian Oetzbach | 6-3,4-6,11-9 |