Stadium: Court 5 Round: 62 Ground: Clay
| ITF M15 Bratislava | 2021/03/04 10:55 | Riccardo Balzerani v Daniel Siniakov | 1-6,6-3,6-3 |
| ITF M15 Bratislava | 2021/03/03 16:55 | Piotr Grynkowski v Daniel Siniakov | 3-6,6-3,1-6 |
| ITF M15 Bratislava | 2021/03/02 09:00 | Peter Makk v Daniel Siniakov | 6-2,6-7,5-10 |
| ITF M15 Bratislava | 2021/03/01 09:00 | Daniel Siniakov v Philip Bachmaier | 6-2,7-6 |
| ITF M25 Pardubice | 2020/09/27 09:00 | Matic Spec v Daniel Siniakov | 1-6,6-2,13-11 |
| ITF M25 Prague | 2020/09/13 09:00 | Wojciech Marek v Daniel Siniakov | 6-0,6-4 |
| ITF M15 Milovice | 2019/11/12 12:25 | Daniel Siniakov v Jakob Aichhorn | 6-7,0-6 |
| ITF M15 Prague | 2019/11/07 10:55 | Daniel Siniakov v Oleksii Krutykh | 6-7,2-6 |
| ITF M15 Antalya | 2021/04/05 07:00 | Edward Hubner v Taiyo Yamanaka | 6-7,6-2,10-5 |
| ITF M15 Antalya | 2021/04/04 06:30 | Elmer Moller v Taiyo Yamanaka | 4-6,4-6 |
| ITF M15 Antalya | 2021/04/01 07:30 | Taiyo Yamanaka v Seong Chan Hong | 7-6,6-7,2-6 |
| ITF M15 Antalya | 2021/03/31 11:00 | Aleksander Orlikowski v Taiyo Yamanaka | 3-6,1-6 |
| ITF M15 Antalya | 2021/03/30 07:00 | Taiyo Yamanaka v Federico Bertuccioli | 6-4,6-7,12-10 |
| ITF M15 Antalya | 2021/03/29 07:00 | Max Alcala Gurri v Taiyo Yamanaka | 6-3,3-6,9-11 |
| ITF M15 Antalya | 2021/03/24 06:30 | Taiyo Yamanaka v Luca Tomasetto | 2-6,2-6 |
| ITF M15 Antalya | 2021/03/22 07:00 | Taiyo Yamanaka v Stefanos Sakellaridis | 7-5,6-0 |