Stadium: Court 3 Round: 62 Ground: Clay
| ITF M15 Cairo | 2021/04/28 09:35 | Carlos Sanchez Jover v Gabriel Donev | 6-1,6-2 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/10 10:30 | Gergely Madarasz v Gabriel Donev | 4-6,6-3,6-0 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/09 11:30 | Gabriel Donev v Joncour, Ronan | 5-7,3-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/07 09:30 | Gabriel Donev v Milushev, Plamen | 7-5,6-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/06 08:30 | Gabriel Donev v Yanaki Milev | 6-2,5-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/05 13:00 | de La Bassetiere, Constant v Gabriel Donev | 5-7,1-6 |
| ITF - M15 Antalya | 2021/03/30 07:00 | Gabriel Donev v Diego A B Sanchez | 4-6,6-1,7-10 |
| ITF - M15 Antalya | 2021/03/29 07:00 | Gabriel Donev v Stefanos Sakellaridis | 6-3,5-7,10-2 |
| ITF M15 Cairo | 2021/05/02 09:00 | Santiago De La Fuente v Yehayan, Mikhail | 6-0,6-0 |
| ITF M15 Cairo | 2021/04/28 10:45 | Santiago De La Fuente v Malla, Bastian | 6-7,3-6 |
| ITF M15 Cairo | 2021/04/21 15:05 | Santiago De La Fuente v Carlos Lopez Montagud | 6-4,2-6,4-6 |
| ITF M15 Cairo | 2021/04/20 10:05 | Kaufmann, Hans Peter v Santiago De La Fuente | 0-6,4-6 |
| ITF M15 Cairo | 2021/04/19 08:00 | Santiago De La Fuente v Canas Garcia, Juan Pablo | 6-3,6-2 |
| ITF M15 Cairo | 2021/04/18 07:00 | Zanada, Edoardo v Santiago De La Fuente | 6-4,1-6,7-10 |
| ITF M15 Cordoba | 2021/04/06 14:45 | Santiago De La Fuente v Mariano Kestelboim | 2-6,1-6 |
| ITF - M15 Villa Maria | 2021/03/30 13:55 | Llanes, Francisco v Santiago De La Fuente | 5-7,6-0,10-7 |