Stadium: Court 9 Round: 54 Ground: Clay
| ITF M25 The Hague | 2021/06/27 08:00 | Carlos Lopez Montagud v Fons Van Sambeek | 6-4,6-2 |
| ITF M25 Alkmaar | 2021/06/24 15:00 | Nicolas Alvarez Varona v Carlos Lopez Montagud | 5-7,6-3,6-2 |
| ITF M25 Alkmaar | 2021/06/23 12:10 | Louis Wessels v Carlos Lopez Montagud | 3-6,6-4,4-6 |
| ITF M25 Alkmaar | 2021/06/21 18:30 | Carlos Lopez Montagud v Benjamin Dhoe | 6-3,6-4 |
| ITF M15 Marbella | 2021/05/27 07:30 | Carlos Lopez Montagud v Roman Andres Burruchaga | 6-7,2-6 |
| ITF M15 Marbella | 2021/05/25 12:05 | Mick Lescure v Carlos Lopez Montagud | 3-6,5-7 |
| ITF M25 Vic | 2021/05/21 12:55 | Carlos Lopez Montagud v Pedro Cachin | 1-6,6-4,1-6 |
| ITF M25 Vic | 2021/05/20 09:00 | Carlos Lopez Montagud v Raul Brancaccio | 6-1,1-6,6-2 |
| ITF M25 The Hague | 2021/06/27 08:00 | Tom Clavel v Michiel de Krom | 3-6,5-7 |
| ITF M25 Alkmaar | 2021/06/21 17:30 | Marvin Moeller v Michiel de Krom | 2-6,6-4,10-3 |
| ITF M25 Alkmaar | 2021/06/20 17:00 | Constantin Bittoun Kouzmine v Michiel de Krom | 3-6,3-6 |
| ITF M15 Valldoreix | 2021/05/09 14:00 | Michiel de Krom v Federico Iannaccone | 3-6,2-6 |
| ITF M15 Majadahonda | 2021/05/05 06:55 | Martin Cuevas v Michiel de Krom | 7-5,6-3 |
| ITF M25 Reus | 2021/04/13 10:00 | Yan Bondarevskiy v Michiel de Krom | 6-3,6-3 |
| ITF M25 Reus | 2021/04/12 07:30 | Jose Joaquin M Cisneros v Michiel de Krom | 0-6,6-4,10-12 |
| ITF M25 Reus | 2021/04/11 11:00 | Ivan Bas Mengual v Michiel de Krom | 1-6,5-7 |