Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Arlon | 2023/06/29 09:50 | Raphael Calzi v Alex Knaff | 2-6,1-6 |
| ITF Belgium F8 Qual | 2017/08/06 08:00 | Raphael Calzi v Alex Knaff | 2-6,0-6 |
| ITF Germany F6 | 2016/07/03 08:00 | Raphael Calzi v Alex Knaff | 6-4,6-3 |
| ITF M15 Dublin | 2024/08/06 11:00 | Raphael Calzi v Marcus Walters | 3-6,7-6,2-6 |
| ITF M15 Dublin | 2024/08/05 10:40 | Gabriele Volpi v Raphael Calzi | 6-7,2-6 |
| ITF M15 Dublin | 2024/08/04 08:00 | Cian McDonnell v Raphael Calzi | 3-6,4-6 |
| ITF M25 Esch/Alzette | 2024/07/17 13:15 | Raphael Calzi v Louis Wessels | 5-7,3-6 |
| ITF M25 Brussels | 2024/06/26 07:55 | Raphael Calzi v Liam Branger | 3-6,5-7 |
| ITF M25 Brussels | 2024/06/24 16:15 | Raphael Calzi v Nino Toto | 6-1,6-3 |
| ITF M25 Brussels | 2024/06/24 11:00 | Raphael Calzi v Christos Glavas | 6-0,6-2 |
| ITF M15 Saarlouis | 2024/06/16 12:00 | Maximilian Oezcelik v Raphael Calzi | 6-3,6-3 |
| ITF M25 Idanha-A-Nova | 2024/08/14 08:00 | Alex Knaff v Tiago Pereira | 4-6,2-6 |
| Challenger Luedenscheid | 2024/07/29 09:00 | Olaf Pieczkowski v Alex Knaff | 6-1,6-3 |
| Challenger Luedenscheid | 2024/07/28 09:00 | Max Stenzer v Alex Knaff | 3-6,2-6 |
| ITF M15 Metzingen | 2024/07/24 16:35 | Ivan Nedelko v Alex Knaff | 6-1,6-2 |
| ITF M15 Lakewood | 2024/07/04 18:00 | Arda Azkara v Alex Knaff | 6-4,6-1 |
| ITF M15 Lakewood | 2024/07/03 18:45 | Jake Van Emburgh v Alex Knaff | 4-6,4-6 |
| ITF M15 Los Angeles | 2024/06/29 18:00 | Patrick Maloney v Alex Knaff | 6-4,4-6,6-3 |
| ITF M15 Los Angeles | 2024/06/28 18:00 | Alex Knaff v Jack Anthrop | 6-4,1-6,7-6 |