| ITF M25 Nur-Sultan | 2021/10/28 07:15 | Filip Peliwo v Ivan Denisov | 7-5,6-2 |
| ITF M25 Nur-Sultan | 2021/10/27 06:25 | Ivan Denisov v Aliaksandr Liaonenka | 6-3,6-4 |
| ITF M25 Nur-Sultan | 2021/10/26 06:25 | Ivan Denisov v Maksim Maslov | 6-2,6-0 |
| ITF M25 Nur-Sultan | 2021/10/25 08:55 | Ivan Denisov v Yan Brek | 6-0,6-0 |
| ITF M25 Nur-Sultan | 2021/10/19 05:10 | Ivan Denisov v Piotr Pawlak | 6-2,1-6,9-11 |
| ITF M25 Nur-Sultan | 2021/10/18 07:35 | Ivan Denisov v Aleksandr Lobanov | 6-2,6-4 |
| UTR Pro Tennis Series Nis | 2021/10/09 11:45 | Ivan Denisov v Egor Novikov | 4-6,2-6 |
| UTR Pro Tennis Series Nis | 2021/10/07 08:30 | Ivan Denisov v Lazar Radenkovic | 6-0,6-1 |
| ITF M15 Almada | 2021/07/07 08:30 | Michiel de Krom v Duarte Vale | 3-6,3-6 |
| ITF M25 The Hague | 2021/06/28 08:45 | Carlos Lopez Montagud v Michiel de Krom | 6-1,6-3 |
| 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 |