Stadium: Court 10 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Novi Sad | 2021/07/26 09:00 | Matic Dimic v Stevan Popovic | 2-6,6-3,10-7 |
| ITF M15 Novi Sad | 2021/07/25 07:00 | Stevan Popovic v Taiyo Yamanaka | 6-3,4-6,10-7 |
| ITF M15 Doboj | 2021/07/14 11:20 | Stevan Popovic v Viktor Jovic | 4-6,2-6 |
| ITF M25 Velenje | 2021/07/05 17:50 | Alen Rogic-Hadzalic v Stevan Popovic | 6-3,6-4 |
| ITF M15 Skopje | 2021/06/07 09:30 | Stevan Popovic v Viktor Jovic | 0-6,0-6 |
| ITF M15 Skopje | 2021/06/06 10:30 | Nicolas Cortes Campos v Stevan Popovic | 6-7,3-6 |
| ITF M15 Sarajevo | 2021/05/31 12:00 | Domagoj Biljesko v Stevan Popovic | 6-1,6-2 |
| ITF M15 Sarajevo | 2021/05/31 08:00 | Tadija Radovanovic v Stevan Popovic | 6-3,5-7,9-11 |
| ITF M15 Parnu | 2021/10/25 10:00 | Attila Boros v Finn Bischof | 6-4,6-0 |
| 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 |