Stadium: Court 1 Round: 25 Ground: Clay
| Challenger Nur-Sultan | 2021/07/20 09:10 | Ergi Kirkin v Ryan Peniston | 2-6,3-6 |
| Challenger Nur-Sultan | 2021/07/19 06:10 | Ergi Kirkin v Benjamin Lock | 5-7,7-6,3-6 |
| Challenger Nur-Sultan | 2021/07/12 04:00 | Ergi Kirkin v Oleksii Krutykh | 1-6,6-7 |
| Challenger Nur-Sultan | 2021/07/11 04:00 | Ergi Kirkin v Timur Mukhtarulin | 6-2,6-0 |
| ITF M25 Alkmaar | 2021/06/23 11:15 | Ergi Kirkin v Marko Tepavac | 4-6,3-6 |
| Challenger Almaty | 2021/06/15 11:50 | Zizou Bergs v Ergi Kirkin | 6-4,5-7,6-2 |
| Challenger Almaty | 2021/06/14 04:00 | Ergi Kirkin v Vladyslav Manafov | 6-2,6-3 |
| Challenger Almaty Qual | 2021/06/13 04:00 | Evan Furness v Ergi Kirkin | 4-6,7-6,5-7 |
| ITF M15 Vejle | 2021/07/26 13:20 | Robin Thour v Andrea Del Federico | 6-3,4-6,9-11 |
| ITF M15 L'Aquila | 2021/07/13 12:10 | Andrea Del Federico v Marco Miceli | 6-7,1-6 |
| ITF M15 Sofia | 2021/07/04 10:30 | Andrea Del Federico v Ivan Mikhaylyuk | 2-6,5-7 |
| ITF M15 Antalya | 2021/06/28 06:30 | Andrea Del Federico v Menelaos Efstathiou | 6-4,4-6,4-10 |
| ITF M15 Antalya | 2021/06/27 06:30 | Andrea Del Federico v Adrian Mateo Bejenaru | 6-4,6-4 |
| ITF M15 Helsinki | 2021/06/03 08:50 | Lucas Catarina v Andrea Del Federico | 6-0,6-2 |
| ITF M15 Helsinki | 2021/06/02 06:30 | Andrea Del Federico v Aleksi Lofman | 6-1,7-5 |
| ITF M15 Monastir | 2021/05/09 10:00 | Zachary Svajda v Andrea Del Federico | 6-2,6-2 |