Stadium: Court 1 Round: 25 Ground: Clay
| ITF M15 - Bratislava | 2021/08/20 08:00 | Vasil Kirkov v Fabian Marozsan | 6-4,1-6,4-6 |
| ITF M15 - Bratislava | 2021/08/19 10:25 | Marat Sharipov v Vasil Kirkov | 4-6,6-7 |
| ITF M15 - Bratislava | 2021/08/18 09:35 | Vasil Kirkov v Franco Roncadelli | 5-7,6-2,6-2 |
| ITF M15 - Frederiksberg | 2021/08/06 10:50 | Markus Eriksson v Vasil Kirkov | 6-4,6-3 |
| ITF M15 - Frederiksberg | 2021/08/05 08:00 | Sandro Kopp v Vasil Kirkov | 6-4,3-6,1-6 |
| ITF M15 - Frederiksberg | 2021/08/04 08:00 | Marius Ruzgas v Vasil Kirkov | 2-6,2-6 |
| ITF M15 - Vejle | 2021/07/30 07:55 | Karl Friberg v Vasil Kirkov | 6-2,7-6 |
| ITF M15 - Vejle | 2021/07/27 12:20 | Adrian Oetzbach v Vasil Kirkov | 7-5,3-6,3-6 |
| ITF M15 - Bratislava | 2021/08/19 08:00 | Diego F Flores v Mate Valkusz | 2-6,6-2,5-7 |
| ITF M15 - Bratislava | 2021/08/18 10:05 | Diego F Flores v Lukas Pokorny | 6-4,2-6,6-4 |
| ITF M15 - Xàtiva | 2021/08/04 07:00 | Diego F Flores v Inaki Montes-De La Torre | 3-6,2-6 |
| ITF - M25 Idanha-A-Nova | 2021/07/19 13:00 | Diego F Flores v Mario G Fernandez | 6-2,3-6,5-10 |
| ITF - M25 Idanha-A-Nova | 2021/07/18 13:00 | Diego F Flores v Michel-Alexandre Fortin | 6-1,6-0 |
| ITF - M25 Idanha-A-Nova | 2021/07/15 08:00 | Nicolas Moreno De Alboran v Diego F Flores | 6-7,6-4,6-4 |
| ITF - M25 Idanha-A-Nova | 2021/07/14 09:35 | Dhruva Mulye v Diego F Flores | 1-6,1-6 |
| ITF M15 Almada | 2021/07/09 10:20 | Joao Lucas Reis da Silva v Diego F Flores | 6-4,7-6 |