Stadium: Court 1 Round: 62 Ground: Clay
| Polish National Tour | 2020/08/23 12:30 | Daniel Michalski v Kamil Gajewski | 6-7,7-6,7-6 |
| Polish National Tour | 2020/08/23 08:00 | Kamil Gajewski v Jasza Szajrych | 6-4,6-1 |
| Polish National Tour | 2020/08/21 11:55 | Kamil Gajewski v Piotr Matuszewski | 7-6,6-4 |
| Polish National Tour | 2020/08/15 16:00 | Kamil Gajewski v Mikolaj Borkowski | 6-4,6-3 |
| Polish National Tour | 2020/08/15 07:30 | Kamil Gajewski v Mikolaj Szmyrgala | 6-3,6-2 |
| Polish National Tour | 2020/07/29 14:50 | Kamil Gajewski v Filip Kolasinski | 7-5,6-7,4-6 |
| Polish National Tour | 2020/07/24 08:00 | Kamil Gajewski v Gabriel Matuszewski | 6-4,1-6,2-6 |
| Polish National Tour | 2020/07/16 08:30 | Kacper Zuk v Kamil Gajewski | 6-2,6-3 |
| ITF M25 Jablonec Nad Nisou | 2021/05/19 08:00 | Vitaliy Sachko v Daniel Siniakov | 4-6,6-3,6-4 |
| ITF M25 Prague | 2021/05/09 08:30 | Daniel Siniakov v Jakub Beran | 5-7,4-6 |
| ITF M15 Antalya | 2021/04/25 07:00 | Daniel Siniakov v Dan Alexandru Tomescu | 1-6,1-6 |
| ITF M15 Antalya | 2021/04/21 08:45 | Paul Woerner v Daniel Siniakov | 6-4,6-3 |
| ITF M15 Antalya | 2021/04/20 07:00 | Michel Vernier v Daniel Siniakov | 0-6,7-6,4-10 |
| ITF M15 Antalya | 2021/04/19 07:00 | Daniel Siniakov v Cheong-Eui Kim | 6-4,3-6,11-9 |
| ITF M15 Antalya | 2021/04/18 07:00 | Daniel Siniakov v Leon Benedict | 6-2,6-1 |
| ITF M15 Antalya | 2021/04/11 07:00 | Daniel Siniakov v Taiyo Yamanaka | 1-6,2-6 |