Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF M25 Budapest | 2021/09/30 11:25 | Zsombor Piros v Attila Boros | 6-4,6-3 |
| ITF M25 Budapest | 2021/09/28 07:30 | Zsombor Velcz v Attila Boros | 7-5,6-7,4-6 |
| ITF M15 Parnu | 2021/10/25 07:00 | Guelfo Baldovinetti v Finn Bischof | 3-6,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/16 10:30 | Yurii Dzhavakian v Finn Bischof | 6-1,6-4 |
| UTR Pro Tennis Series Mulheim | 2021/10/15 10:00 | Jose Antonio Rodriguez Rodriguez v Finn Bischof | 4-6,7-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/14 13:30 | Melchior Delloye v Finn Bischof | 3-6,6-3,5-1 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 07:00 | Sidane Pontjodikromo v Finn Bischof | 7-6,6-6 |
| ITF M25 Eupen | 2021/09/06 13:00 | Finn Bischof v Mateo Nicolas Martinez | 2-6,2-6 |
| ITF M25 Eupen | 2021/09/05 11:15 | Fred Olivier Schommer v Finn Bischof | 3-6,0-6 |
| ITF M15 Oldenzaal | 2021/08/15 07:30 | Finn Bischof v Lorenzo Joaquin Rodriguez | 1-6,1-6 |