Stadium: Court 6 Round: 62 Ground: Clay
| ITF M25 Biel | 2021/03/29 07:55 | Kilian Feldbausch v Kai Wehnelt | 3-6,6-1,11-9 |
| ITF M15 Monastir | 2021/03/12 08:30 | Kai Wehnelt v Luca Giacomini | 4-6,4-6 |
| ITF M15 Monastir | 2021/03/11 08:30 | Kai Wehnelt v Ryota Tanuma | 6-1,6-4 |
| ITF M15 Monastir | 2021/03/09 08:30 | Mateus Alves v Kai Wehnelt | 6-7,5-7 |
| ITF M15 Monastir | 2021/03/04 08:30 | Kai Wehnelt v Simon Carr | 5-7,0-6 |
| ITF M15 Monastir | 2021/03/03 10:10 | Aziz Ouakaa v Kai Wehnelt | 2-6,7-6,2-6 |
| ITF M15 Monastir | 2021/02/24 09:40 | Omar Giacalone v Kai Wehnelt | 6-3,6-4 |
| German Championship | 2020/12/11 13:00 | Daniel Masur v Kai Wehnelt | 6-7 |
| ITF M15 Sharm El Sheikh | 2021/01/31 13:30 | Mate Valkusz v Gian Luca Tanner | 4-6,6-4,10-6 |
| ITF M15 Bressuire | 2021/01/18 12:30 | Valentin Lapalu v Gian Luca Tanner | 6-4,6-2 |
| ITF M15 Bressuire | 2021/01/18 08:30 | Gian Luca Tanner v Clement Tabur | 6-2,6-3 |
| ITF M15 Bressuire | 2021/01/17 08:30 | Allan Deschamps v Gian Luca Tanner | 3-6,4-6 |
| ITF M15 Manacor | 2021/01/06 09:50 | Gian Luca Tanner v Antoine Cornut-Chauvinc | 7-5,3-6,3-6 |
| ITF M15 Manacor | 2021/01/05 14:00 | Gian Luca Tanner v Juan P Canas Garcia | 6-4,7-6 |
| ITF M15 Manacor | 2021/01/03 11:30 | Clement Tabur v Gian Luca Tanner | 3-6,5-7 |
| ITF M25 Klosters | 2020/09/15 08:25 | Raphael Baltensperger v Gian Luca Tanner | 7-6,6-2 |