Stadium: Hard 21 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 Héraklion | 2021/11/23 08:30 | Kai Wehnelt v Ioannis Kountourakis | 6-3,6-3 |
| ITF - M15 Héraklion | 2021/11/17 11:20 | Kai Wehnelt v Ivanov, Simon Anthony | 5-7,4-6 |
| ITF M25 Villers Les Nancy | 2021/11/09 10:50 | Tristan Schoolkate v Kai Wehnelt | 7-5,6-2 |
| ITF M25 Hamburg | 2021/10/21 09:55 | Louis Wessels v Kai Wehnelt | 7-5,4-6,6-3 |
| ITF M25 Hamburg | 2021/10/20 08:00 | Kai Wehnelt v Eriksson, Markus | 6-4,7-5 |
| ITF M15 Sozopol | 2021/10/13 15:40 | Kai Wehnelt v Paulson, Andrew | 6-7,1-6 |
| ITF M15 Sozopol | 2021/10/10 07:00 | Billy Harris v Kai Wehnelt | 6-4,6-1 |
| ITF M15 Sozopol | 2021/10/09 07:00 | Alexander Donski v Kai Wehnelt | 6-4,3-6,6-7 |
| ITF - M15 Héraklion | 2021/11/24 08:20 | Ginat, Roi v Ktiri, Marc Othman | 3-6,6-7 |
| ITF - M15 Héraklion | 2021/11/23 07:00 | Elmer Moller v Ktiri, Marc Othman | 6-2,6-2 |
| ITF - M15 Héraklion | 2021/11/22 08:00 | Christian Fellin v Ktiri, Marc Othman | 1-6,2-6 |
| ITF - M15 Héraklion | 2021/11/21 11:00 | Simone Vaccari v Ktiri, Marc Othman | 3-6,4-6 |
| ITF - M15 Héraklion | 2021/11/16 08:30 | Ktiri, Marc Othman v Leopold Zima | 5-7,3-6 |
| ITF - M15 Héraklion | 2021/11/15 11:00 | Ktiri, Marc Othman v Hoeveler, Leon | 6-4,6-4 |
| ITF - M15 Héraklion | 2021/11/14 11:00 | Dray, Eitan v Ktiri, Marc Othman | 0-6,1-6 |
| ITF - M15 Torello | 2021/11/03 10:50 | Stefanos Sakellaridis v Ktiri, Marc Othman | 7-5,7-5 |