Stadium: Court 4 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/07/25 12:00 | Siddhant Banthia v Nikita Ianin | 1-6,7-6,10-5 |
| ITF M15 Monastir | 2021/08/01 10:00 | Nikolas Moceanu v Martin Dimitrov | 3-6,2-6 |
| 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 |