Stadium: Court 7 Round: 54 Ground: Clay
| ITF - M15 Bukurešť | 2021/05/26 08:30 | Kai Wehnelt v Cristian Rodriguez | 6-7,3-6 |
| ITF - M15 Troisdorf | 2021/05/13 09:00 | Kai Wehnelt v Lucas Gerch | 4-6,6-4,5-7 |
| ITF - M15 Troisdorf | 2021/05/11 12:35 | Tomas Lipovsek Puches v Kai Wehnelt | 1-6,7-6,3-6 |
| ITF - M15 Káhira | 2021/05/06 07:50 | Jose Fco. Vidal Azorin v Kai Wehnelt | 6-4,6-3 |
| ITF - M15 Káhira | 2021/05/05 09:45 | Hanwen Li v Kai Wehnelt | 3-6,4-6 |
| ITF - M15 Káhira | 2021/04/28 08:00 | Kai Wehnelt v Juan Ignacio Galarza | 6-7,6-4,6-7 |
| ITF - M15 Káhira | 2021/04/21 14:45 | Juan Ignacio Galarza v Kai Wehnelt | 6-3,6-3 |
| ITF - M25 Meerbusch | 2021/04/11 13:30 | Kai Wehnelt v Gian Luca Tanner | 6-3,4-6,2-10 |
| ITF - M25 Alkmaar | 2021/06/20 18:00 | Deney Wassermann v Niels Visker | 7-6,6-7,10-6 |
| ITF - M15 - Antalya | 2021/04/05 07:00 | Deney Wassermann v Sidane Pontjodikromo | 4-6,2-6 |
| ITF - M15 - Antalya | 2021/04/04 06:30 | Deney Wassermann v Egor Matvievici | 6-3,6-1 |
| ITF - M15 - Antalya | 2021/03/30 07:00 | Paul Woerner v Deney Wassermann | 6-1,6-4 |
| ITF - M15 - Antalya | 2021/03/29 07:00 | Mert Arabaci v Deney Wassermann | 1-6,1-6 |
| ITF - M15 - Antalya | 2021/03/28 06:30 | Deney Wassermann v Marlon Vankan | 6-1,6-4 |
| ITF - M15 - Antalya | 2021/03/26 07:00 | Deney Wassermann v Daniel Michalski | 4-6,6-2,3-6 |
| ITF - M15 - Antalya | 2021/03/25 12:15 | Diego A B Sanchez v Deney Wassermann | 5-7,1-6 |