Stadium: Court 20 Round: 25 Ground: Clay
| ITF - Antalya M15 | 2021/04/20 07:00 | Paul Woerner v Gabriele Bosio | 6-3,6-0 |
| ITF - Antalya M15 | 2021/04/19 09:00 | Paul Woerner v Amador Salazar | 6-4,6-3 |
| ITF - Antalya M15 | 2021/04/18 07:00 | Paul Woerner v Vladislav Sveridenko | 6-1,6-1 |
| ITF - Meerbusch M25 | 2021/04/14 10:00 | Dan Added v Paul Woerner | 6-4,1-6,6-0 |
| ITF - Meerbusch M25 | 2021/04/13 11:00 | Christian Hansen v Paul Woerner | 2-6,3-6 |
| ITF - Meerbusch M25 | 2021/04/12 12:00 | Jim Walder v Paul Woerner | 3-6,5-7 |
| ITF - Meerbusch M25 | 2021/04/12 07:30 | Tristan Reiff v Paul Woerner | 3-6,1-6 |
| ITF - Antalya M15 | 2021/03/31 07:00 | Paul Woerner v Michel Vernier | 6-7,6-7 |
| ITF - Antalya M15 | 2021/04/20 07:00 | Michel Vernier v Daniel Siniakov | 0-6,7-6,4-10 |
| ITF - Antalya M15 | 2021/04/19 07:00 | Daniel Siniakov v Cheong-Eui Kim | 6-4,3-6,11-9 |
| ITF - Antalya M15 | 2021/04/18 07:00 | Daniel Siniakov v Leon Benedict | 6-2,6-1 |
| ITF - Antalya M15 | 2021/04/11 07:00 | Daniel Siniakov v Taiyo Yamanaka | 1-6,2-6 |
| ITF - Bratysława M15 | 2021/03/04 10:55 | Riccardo Balzerani v Daniel Siniakov | 1-6,6-3,6-3 |
| ITF - Bratysława M15 | 2021/03/03 16:55 | Piotr Grynkowski v Daniel Siniakov | 3-6,6-3,1-6 |
| ITF - Bratysława M15 | 2021/03/02 09:00 | Peter Makk v Daniel Siniakov | 6-2,6-7,5-10 |
| ITF - Bratysława M15 | 2021/03/01 09:00 | Daniel Siniakov v Philip Bachmaier | 6-2,7-6 |