Stadium: Court 3 Round: 25 Ground: Clay
| Challenger Szczecin | 2021/09/12 12:10 | Vitaliy Sachko v Maks Kasnikowski | 6-7,6-1,6-3 |
| Challenger Warsaw | 2021/08/25 15:40 | Camilo Ugo Carabelli v Maks Kasnikowski | 6-2,6-4 |
| ITF M15 Gdynia | 2021/08/11 12:30 | Petr Hajek v Maks Kasnikowski | 6-4,6-7,7-5 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/05 08:35 | Maks Kasnikowski v Zsombor Piros | 4-6,7-6,6-7 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/04 15:00 | Svyatoslav Ilnytskyy v Maks Kasnikowski | 2-6,3-6 |
| Challenger Poznan | 2021/07/25 13:00 | Maks Kasnikowski v Christopher Heyman | 3-6,4-6 |
| Polish National Tour | 2021/07/15 09:15 | Kamil Majchrzak v Maks Kasnikowski | 6-4,6-2 |
| Polish National Tour | 2021/07/14 10:30 | Aleksander Orlikowski v Maks Kasnikowski | 7-6,3-6,1-6 |
| ITF M15 Platja D'Aro | 2021/10/15 14:05 | Pol Toledo Bague v Aleksandre Metreveli | 7-5,6-3 |
| ITF M15 Platja D'Aro | 2021/10/14 14:50 | Aleksandre Metreveli v Alex M Pujolras | 2-6,7-5,6-3 |
| ITF M15 Platja D'Aro | 2021/10/12 09:40 | Coleman Wong v Aleksandre Metreveli | 7-6,3-6,4-6 |
| ITF M25 Telavi | 2021/08/01 06:00 | Vladyslav Orlov v Aleksandre Metreveli | 1-6,2-6 |
| ITF M25 Telavi | 2021/07/31 10:30 | Boris Butulija v Aleksandre Metreveli | 5-7,4-6 |
| ITF M25 Telavi | 2021/07/31 05:55 | Marco De Rossi v Aleksandre Metreveli | 3-6,3-6 |
| ITF M25 Telavi | 2021/07/30 09:45 | Omer Yeshaya v Aleksandre Metreveli | 0-6,2-6 |
| ITF M25 Marburg | 2021/07/08 11:00 | Nick Hardt v Aleksandre Metreveli | 6-3,4-6,6-0 |