| ITF M15 Sofia | 2021/07/05 08:00 | Martin Dimitrov v Mihai Razvan Marinescu | 6-3,6-7,5-10 |
| ITF M15 Sofia | 2021/07/04 09:00 | Ray Ho v Martin Dimitrov | 3-6,6-3,5-10 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Piotr Pawlak v Martin Dimitrov | 4-6,6-4,10-6 |
| ITF M15 Novomoskovsk | 2021/05/25 06:15 | Martin Dimitrov v Aleksandr Braynin | 6-7,2-6 |
| ITF M15 Novomoskovsk | 2021/05/25 06:15 | Vladyslav Gorodynskyi v Martin Dimitrov | 3-6,3-6 |
| ITF M15 Cairo | 2021/05/05 13:50 | Volodymyr Uzhylovskyi v Martin Dimitrov | 4-6,6-2,6-3 |
| ITF M15 Cairo | 2021/05/04 08:00 | Zachary Eisinga v Martin Dimitrov | 1-6,6-7 |
| ITF M15 Cairo | 2021/05/03 08:00 | Marco De Rosa v Martin Dimitrov | 7-6,2-6,9-11 |