Stadium: Court 1 Round: 44 Ground: Clay
| 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 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/10 12:00 | Martin Dimitrov v Constant De La Bassetiere | 4-6,6-4,3-5 |
| UTR Pro Tennis Series Bucharest | 2021/06/04 07:00 | Mihai Razvan Marinescu v Vladimir Filip | 0-6,3-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/03 07:30 | Ihor Dudun v Mihai Razvan Marinescu | 0-6,1-5 |
| UTR Pro Tennis Series Bucharest | 2021/05/30 13:00 | Mihai Razvan Marinescu v Warren Sinius | 6-4,6-1 |
| ITF M15 Bucharest | 2021/05/24 09:30 | Quentin Folliot v Mihai Razvan Marinescu | 6-4,7-5 |
| ITF M15 Bucharest | 2021/05/23 12:00 | Mihai Razvan Marinescu v Allan Deschamps | 6-2,6-4 |
| ITF M15 Curtea de Arges | 2020/09/13 12:00 | Mihai Razvan Marinescu v Bruno P Navarro | 6-7,4-6 |
| ITF M15 Bucharest | 2020/09/07 10:30 | Mihai Razvan Marinescu v Bogdan Borza | 6-3,4-6,8-10 |
| ITF M15 Bucharest | 2020/09/06 07:00 | Egill Sigurdsson v Mihai Razvan Marinescu | 2-6,4-6 |