Stadium: Court 4 Round: 26 Ground: Clay
| Challenger Poznan | 2021/07/27 11:50 | Daniel Michalski v Botic Van De Zandschulp | 2-6,3-6 |
| Polish National Tour | 2021/07/15 10:35 | Daniel Michalski v Kacper Zuk | 2-6,4-6 |
| Polish National Tour | 2021/07/14 11:50 | Maciej Rajski v Daniel Michalski | 0-6,5-7 |
| Polish National Tour | 2021/07/13 11:50 | Mateusz Terczynski v Daniel Michalski | 2-6,1-6 |
| Challenger Braunschweig | 2021/07/06 15:50 | Daniel Michalski v Vit Kopriva | 2-6,2-6 |
| Challenger Braunschweig | 2021/07/05 09:30 | Tim Sandkaulen v Daniel Michalski | 3-6,5-7 |
| Challenger Braunschweig | 2021/07/04 09:00 | Daniel Michalski v Adrian Andreev | 7-6,7-6 |
| ITF M25 Wroclaw | 2021/07/01 08:50 | Toby Alex Kodat v Daniel Michalski | 6-7,6-4,6-0 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/18 06:00 | Ilya Snitari v Olexiy Kolisnyk | 7-5,3-6,2-5 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/16 07:30 | Iliyan Radulov v Ilya Snitari | 3-6,2-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 10:30 | Dian Nedev v Ilya Snitari | 4-6,6-4,1-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/14 06:00 | Petyr Kardzhiev v Ilya Snitari | 0-6,0-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 07:30 | Denislav Prodanov v Ilya Snitari | 1-6,1-6 |
| ITF M15 Sofia | 2021/07/04 06:30 | Ilya Snitari v Tommaso Compagnucci | 6-7,6-2,7-10 |
| Davis Cup | 2021/06/25 08:00 | Stefano Galvani v Ilya Snitari | 2-6,1-6 |
| Davis Cup | 2021/06/22 08:00 | Damien Gelabert v Ilya Snitari | 1-6,2-6 |