Stadium: Court 6 Round: 26 Ground: Hardcourt outdoor
| 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 |
| German Championship | 2020/12/10 15:30 | Leonard Von Hindte v Kai Wehnelt | 2-6,1-5 |
| German Championship | 2020/12/09 15:30 | Johann Lars v Kai Wehnelt | 3-6,1-6 |
| DTB German Pro Series | 2020/06/26 08:00 | Marvin Moeller v Kai Wehnelt | 6-4,6-0 |
| ITF M15 Monastir | 2021/03/10 09:30 | Anis Ghorbel v Ryota Tanuma | 4-6,6-4,0-6 |
| ITF M15 Monastir | 2021/03/02 08:30 | Ryota Tanuma v Juan Bautista Torres | 6-3,4-6,2-6 |
| ITF M15 Monastir | 2021/02/23 11:10 | Alexander Erler v Ryota Tanuma | 6-4,6-4 |
| ITF M15 Monastir | 2021/02/16 08:00 | Ryota Tanuma v Lilian Marmousez | 4-6,2-6 |
| ITF M15 Monastir | 2021/02/10 10:45 | Ryota Tanuma v Moez Echargui | 6-7,6-7 |
| ITF M15 Monastir | 2021/02/08 09:30 | Ryota Tanuma v Louis Herman | 6-3,6-4 |
| ITF M15 Monastir | 2021/02/07 12:30 | Ryota Tanuma v Daiki Yoshimura | 6-4,6-3 |
| ITF M15 Sharm El Sheikh | 2020/02/28 08:00 | Karim-Mohamed Maamoun v Ryota Tanuma | 6-2,6-3 |