| UTR Pro Tennis Series Amsterdam | 2021/12/12 07:00 | Sandkaulen, Tim v Michiel de Krom | 2-6,6-4,6-4 |
| UTR Pro Tennis Series Amsterdam | 2021/12/11 11:30 | Admiraal, Amadatus v Michiel de Krom | 3-6,4-5 |
| UTR Pro Tennis Series Amsterdam | 2021/12/10 08:30 | Michiel de Krom v van Nunen, Max | 6-1,6-1 |
| UTR Pro Tennis Series Amsterdam | 2021/12/08 10:00 | Michiel de Krom v Guy Den Heijer | 3-6,3-5 |
| UTR Pro Tennis Series Amsterdam | 2021/12/07 08:30 | Michiel de Krom v Rob Van Den Berg | 5-7,6-3,5-2 |
| UTR Pro Tennis Series Amsterdam | 2021/12/06 07:00 | Jip Van Assendelft v Michiel de Krom | 2-6,6-2,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/11/28 09:30 | Michiel de Krom v Vlad Cristian Breazu | 6-1,4-6,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/11/27 11:00 | Michiel de Krom v Alvaro Bueno Gil | 6-4,6-3 |
| ITF - M15 Antalya | 2021/12/17 08:10 | Billy Harris v Marsel Ilhan | 6-3,6-3 |
| ITF - M15 Antalya | 2021/12/16 07:50 | Minakov, Mikhail v Marsel Ilhan | 1-6,3-6 |
| ITF - M15 Antalya | 2021/12/14 08:35 | Gokberk Saritas v Marsel Ilhan | 3-6,5-7 |
| Challenger Antalya | 2021/12/08 11:20 | Alexandar Lazarov v Marsel Ilhan | 6-3,6-3 |
| Challenger Antalya | 2021/12/06 11:30 | Jakub Paul v Marsel Ilhan | 2-6,3-6 |
| Challenger Antalya Qual | 2021/12/05 08:55 | Marsel Ilhan v Toledo Bague, Pol | 7-6,6-3 |
| Challenger Antalya | 2021/11/29 11:45 | Louis Wessels v Marsel Ilhan | 6-3,3-6,6-4 |
| Challenger Antalya | 2021/11/29 07:30 | Marsel Ilhan v Giovanni Fonio | 6-4,3-6,6-4 |