Stadium: Court 16 Round: 62 Ground: Clay
| ITF M15 Novi Sad | 2021/08/04 08:00 | Valerio Aboian v Charles Broom | 5-7,2-6 |
| ITF M15 Novi Sad | 2021/08/03 10:10 | Aleksa Mardjonovic v Valerio Aboian | 2-6,7-5,10-12 |
| ITF M15 Novi Sad | 2021/08/02 11:00 | Valerio Aboian v Rrezart Cungu | 6-4,1-6,13-11 |
| ITF M15 Novi Sad | 2021/08/01 12:45 | Linghao Zhang v Valerio Aboian | 0-6,3-6 |
| ITF M15 Novi Sad | 2021/07/26 09:00 | Valerio Aboian v Peter Makk | 6-4,3-6,10-3 |
| ITF M15 Novi Sad | 2021/07/25 10:45 | Maxim Krapivin v Valerio Aboian | 2-6,0-6 |
| ITF M15 Cordoba | 2021/04/08 13:00 | Luciano Darderi v Valerio Aboian | 7-5,6-4 |
| ITF M15 Cordoba | 2021/04/07 13:30 | Valerio Aboian v Ignacio Carou | 6-2,6-0 |
| ITF M15 Frederiksberg | 2021/08/05 10:25 | Christian Sigsgaard v Daniel De Jonge | 6-4,7-6 |
| ITF M15 Frederiksberg | 2021/08/03 09:20 | Daniel De Jonge v Patrick Kypson | 6-3,7-6 |
| ITF M25 Marburg | 2021/07/05 12:05 | Patrick Zahraj v Daniel De Jonge | 6-3,6-2 |
| ITF M25 The Hague | 2021/07/01 07:30 | Marko Tepavac v Daniel De Jonge | 7-5,6-1 |
| ITF M25 The Hague | 2021/06/27 08:00 | Max Van Wijk v Daniel De Jonge | 2-6,0-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/20 09:30 | Daniel De Jonge v Sebastian Grundtvig Jorgensen | 6-4,4-6,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/19 10:00 | Daniel De Jonge v Marius Ruzgas | 3-6,7-6,6-1 |
| UTR Pro Tennis Series Copenhagen | 2021/06/18 09:30 | Daniel De Jonge v Jesper Klov Nilsson | 6-3,4-6,6-3 |