Stadium: Court 4 Round: 54 Ground: Clay
| ITF M25 Wetzlar | 2021/08/04 12:55 | Matthew Romios v Max Wiskandt | 6-4,6-3 |
| ITF M25 Marburg | 2021/07/06 16:15 | Max Wiskandt v Kyrian Jacquet | 6-2,6-4 |
| ITF M25 Alkmaar | 2021/06/20 11:00 | Marvin Moeller v Max Wiskandt | 7-6,6-3 |
| ITF M15 Heraklion | 2021/05/23 08:00 | Eleftherios Neos v Max Wiskandt | 3-6,2-6 |
| ITF M15 Heraklion | 2021/05/20 09:50 | Max Wiskandt v Yshai Oliel | 6-3,1-6,2-6 |
| ITF M15 Heraklion | 2021/05/18 10:10 | Lorenzo Claverie v Max Wiskandt | 4-6,4-6 |
| ITF M15 Troisdorf | 2021/05/12 12:00 | Yannick Mertens v Max Wiskandt | 7-6,6-3 |
| ITF M25 Meerbusch | 2021/04/11 14:00 | Hugo Voljacques v Max Wiskandt | 4-6,6-1,10-0 |
| ITF M25 Marburg | 2021/07/07 13:00 | Louis Wessels v Niklas Schell | 6-3,6-4 |
| ITF M25 Klosters | 2021/06/20 08:55 | Ilias Zimmermann v Niklas Schell | 6-4,4-6,12-10 |
| ITF M15 Antalya | 2021/05/23 07:00 | Niklas Schell v Stefano D'Agostino | 4-6,6-3,7-10 |
| ITF M15 Troisdorf | 2021/05/09 08:00 | Marlon Vankan v Niklas Schell | 2-6,7-6,13-11 |
| ITF M15 Monastir | 2021/04/18 13:00 | Lilian Breut v Niklas Schell | 6-2,6-3 |
| ITF M15 Monastir | 2021/04/14 08:30 | Niklas Schell v Giorgio Ricca | 3-6,2-6 |
| ITF M15 Monastir | 2021/04/12 13:00 | Leyton Rivera v Niklas Schell | 4-6,7-6,8-10 |
| ITF M15 Monastir | 2021/04/11 11:00 | Viktor Jovic v Niklas Schell | 6-7,2-6 |