Stadium: Court 10 Round: 54 Ground: Clay
| ITF M25 The Hague | 2021/06/27 08:00 | Mick Veldheer v Jarno Jans | 6-4,6-1 |
| ITF M25 Klosters | 2021/06/25 08:55 | Dominic Stephan Stricker v Mick Veldheer | 6-2,6-0 |
| ITF M25 Klosters | 2021/06/24 06:55 | Mick Veldheer v Sandro Ehrat | 6-3,5-7,6-3 |
| ITF M25 Klosters | 2021/06/22 09:45 | Mick Veldheer v Damien Wenger | 1-6,6-2,6-4 |
| ITF M15 Antalya | 2021/05/19 08:50 | Davide Galoppini v Mick Veldheer | 7-5,7-5 |
| ITF M15 Antalya | 2021/05/13 07:00 | Nick Hardt v Mick Veldheer | 6-1,6-1 |
| ITF M15 Antalya | 2021/05/11 08:25 | Mick Veldheer v Sergey Fomin | 6-7,6-2,6-1 |
| ITF M15 Antalya | 2021/05/04 07:00 | Mick Veldheer v Gerald Melzer | 4-6,5-7 |
| ITF M25 The Hague | 2021/06/27 08:00 | Deney Wassermann v Sidane Pontjodikromo | 4-6,3-6 |
| ITF M15 Skopje | 2021/06/09 09:00 | Sidane Pontjodikromo v Daniele Capecchi | 0-6,2-6 |
| ITF M15 Skopje | 2021/06/08 07:30 | Stefano Battaglino v Sidane Pontjodikromo | 4-6,1-6 |
| ITF M15 Skopje | 2021/06/07 08:00 | Charles Tzicas v Sidane Pontjodikromo | 2-6,5-7 |
| ITF M15 Skopje | 2021/06/02 08:00 | Sidane Pontjodikromo v Nicolo Turchetti | 6-3,4-6,5-7 |
| ITF M15 Skopje | 2021/06/01 08:00 | Sidane Pontjodikromo v Viktor Jovic | 6-1,6-3 |
| ITF M15 Skopje | 2021/05/31 08:00 | Sidane Pontjodikromo v Adam Bronka | 6-1,6-2 |
| ITF M15 Skopje | 2021/05/30 08:00 | Sidane Pontjodikromo v Dimitar Grabul | 6-2,6-3 |