Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Esch/Alzette | 2023/07/13 10:00 | Kai Wehnelt v Alex Knaff | 6-7,7-6,7-6 |
| ITF M25 Nussloch | 2024/01/23 09:55 | Patrick Zahraj v Kai Wehnelt | 6-3,6-3 |
| ITF M15 Cadolzburg | 2024/01/17 09:55 | Jakub Filip v Kai Wehnelt | 7-6,0-6,7-6 |
| Challenger Yokkaichi | 2023/11/27 01:00 | August Holmgren v Kai Wehnelt | 6-2,6-4 |
| Challenger Jokohama | 2023/11/19 06:50 | Kai Wehnelt v Yan Bai | 4-6,4-6 |
| Challenger Drummondville | 2023/11/12 20:20 | Kai Wehnelt v Nicaise Muamba | 4-6,6-4,6-7 |
| Challenger Calgary | 2023/11/06 17:00 | Kai Wehnelt v Patrick Brady | 1-6,6-7 |
| Challenger Sydney | 2023/10/30 02:10 | Rubin Statham v Kai Wehnelt | 6-4,7-6 |
| Challenger Sydney | 2023/10/29 02:20 | Sean Van Rensburg v Kai Wehnelt | 1-6,2-6 |
| ITF M25 Saint Dizier | 2024/03/27 09:00 | Sascha Gueymard Wayenburg v Alex Knaff | 6-1,6-3 |
| ITF M25 Toulouse | 2024/03/21 11:30 | Alex Knaff v Maxime Janvier | 6-3,6-7,1-6 |
| ITF M25 Toulouse | 2024/03/19 09:00 | Alex Knaff v David Poljak | 6-4,7-5 |
| ITF M15 Les Franqueses | 2024/03/15 11:30 | Nikoloz Basilashvili v Alex Knaff | 6-0,6-1 |
| ITF M15 Les Franqueses | 2024/03/14 09:00 | Charles Chen v Alex Knaff | 1-6,1-6 |
| ITF M15 Les Franqueses | 2024/03/12 14:10 | Paul Barbier Gazeu v Alex Knaff | 6-4,2-6,1-6 |
| ITF M15 Torello | 2024/03/07 09:30 | Alex Knaff v Nikoloz Basilashvili | 4-6,6-7 |
| ITF M15 Torello | 2024/03/06 09:00 | Alex Knaff v Michael Zhu | 7-5,6-3 |