Stadium: Court 5 Round: 27 Ground: Clay
| ITF M15 Novomoskovsk | 2021/06/03 11:45 | Alexander Zgirovsky v Gabriel Donev | 6-2,3-6,10-8 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Gabriel Donev v Denis Parshutin | 6-0,6-4 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Gabriel Donev v Roman Boychuk | 6-1,6-0 |
| ITF M15 Novomoskovsk | 2021/05/26 09:05 | Ivan Nedelko v Gabriel Donev | 6-3,6-4 |
| ITF M15 Novomoskovsk | 2021/05/25 08:45 | Gabriel Donev v Alexander Zgirovsky | 6-4,6-2 |
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Gabriel Donev v Dzianis Zharyn | 7-6,6-7,10-6 |
| ITF M15 Cairo | 2021/05/07 10:15 | Gabriel Donev v Oliver Crawford | 6-3,2-6,2-6 |
| ITF M15 Cairo | 2021/05/06 08:00 | Gabriel Donev v Volodymyr Uzhylovskyi | 6-1,6-1 |
| UTR Pro Tennis Series Bucharest | 2021/06/05 07:00 | Juan Pablo Paz v Oscar Jose Gutierrez | 3-6,1-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/04 08:30 | Juan Pablo Paz v Petru-Alexandru Luncanu | 6-3,6-1 |
| UTR Pro Tennis Series Bucharest | 2021/06/03 09:00 | Juan Pablo Paz v Vlad Andrei Dumitru | 6-2,5-1 |
| UTR Pro Tennis Series Bucharest | 2021/06/02 16:00 | Juan Pablo Paz v Anatoliy Petrenko | 6-4,6-2 |
| UTR Pro Tennis Series Bucharest | 2021/06/02 10:30 | Yanais Laurent v Juan Pablo Paz | 4-6,4-6 |
| ITF M15 Bucharest | 2021/05/26 13:45 | Juan Pablo Paz v Cezar Cretu | 2-6,3-6 |
| UTR Pro Tennis Series Bucharest | 2021/05/23 10:00 | Juan Pablo Paz v Tomas Lipovsek Puches | 6-3,2-0 |
| UTR Pro Tennis Series Bucharest | 2021/05/21 18:00 | Juan Pablo Paz v Radu Mihai Papoe | 6-2,6-3 |