Stadium: Centre Court Round: 14 Ground: Clay
| Polen - National Tour | 2021/07/15 09:15 | Kamil Majchrzak v Maks Kasnikowski | 6-4,6-2 |
| Polen - National Tour | 2021/07/14 10:30 | Aleksander Orlikowski v Maks Kasnikowski | 7-6,3-6,1-6 |
| Polen - National Tour | 2021/07/13 09:15 | Maks Kasnikowski v Pawel Juszczak | 7-6,7-6 |
| ITF - M15 - Monastir | 2021/04/01 08:30 | Sho Shimabukuro v Maks Kasnikowski | 6-4,5-7,7-6 |
| ITF - M15 - Monastir | 2021/03/30 10:30 | Aziz Ouakaa v Maks Kasnikowski | 0-6,1-6 |
| ITF - M15 - Monastir | 2021/03/23 11:05 | Jordan Correia v Maks Kasnikowski | 6-4,6-4 |
| ITF M25 - Poznan | 2020/08/25 14:00 | Maks Kasnikowski v Jelle Sels | 6-3,4-6,2-6 |
| Polen - National Tour | 2020/07/25 11:55 | Kamil Majchrzak v Maks Kasnikowski | 6-4,1-6,6-2 |
| ITF M25 - Marburg | 2021/07/07 14:55 | Christopher Heyman v Henri Squire | 5-7,3-6 |
| ITF M25 - Haag | 2021/07/02 14:30 | Jelle Sels v Christopher Heyman | 6-3,6-0 |
| ITF M25 - Haag | 2021/07/01 11:40 | Christopher Heyman v Jesper De Jong | 6-4,7-5 |
| ITF M25 - Haag | 2021/06/30 12:15 | Raphael Collignon v Christopher Heyman | 1-6,7-6,3-6 |
| ITF M25 - Alkmaar | 2021/06/26 13:35 | Nicolas Alvarez Varona v Christopher Heyman | 6-4,3-6,7-6 |
| ITF M25 - Alkmaar | 2021/06/25 11:45 | Christopher Heyman v Gijs Brouwer | 6-4,6-4 |
| ITF M25 - Alkmaar | 2021/06/24 09:00 | Kaichi Uchida v Christopher Heyman | 2-6,6-3,6-7 |
| ITF M25 - Alkmaar | 2021/06/22 09:00 | Christopher Heyman v Alexander Shevchenko | 7-6,6-2 |