Stadium: Court 3 Round: 62 Ground: Clay
| ITF M15 Skopje | 2021/06/06 09:00 | Simon Habsuda v Luka Pavlovic | 3-6,2-6 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Aliaksandr Liaonenka v Simon Habsuda | 6-2,6-0 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Oleksandr Bielinskyi v Simon Habsuda | 6-3,3-6,8-10 |
| ITF M25 Telfs | 2021/07/12 12:05 | Lukas Palovic v Niklas Rohrer | 6-4,6-3 |
| ITF M25 Telfs | 2021/07/11 09:00 | Christian Fellin v Niklas Rohrer | 2-6,3-6 |
| ITF M25 Most | 2021/05/24 08:00 | Kai Lemstra v Niklas Rohrer | 6-3,6-2 |
| ITF M25 Most | 2021/05/23 08:00 | Niklas Rohrer v Lukas Pokorny | 7-6,6-3 |
| ITF M25 Prague | 2021/05/09 13:30 | Lucas Bouquet v Niklas Rohrer | 6-1,6-3 |
| ITF M15 Antalya | 2021/04/11 07:00 | Marco De Rossi v Niklas Rohrer | 6-3,6-2 |
| ITF M15 Antalya | 2021/04/04 10:00 | Matteo Gigante v Niklas Rohrer | 6-2,6-0 |
| ITF M15 Antalya | 2021/03/28 06:30 | Andrea Borroni v Niklas Rohrer | 6-2,6-2 |