Stadium: Court 1 Round: 25 Ground: Clay
| ITF M25 Trier | 2021/08/23 11:30 | Max Wiskandt v Tristan Reiff | 6-3,6-2 |
| ITF M25 Trier | 2021/08/23 08:30 | Max Wiskandt v Tom Diederich | 6-2,6-4 |
| ITF M25 Ueberlingen | 2021/08/18 08:00 | Henri Squire v Max Wiskandt | 6-4,6-3 |
| ITF M25 Frankfurt am Main | 2021/08/09 11:55 | Max Wiskandt v Niklas Schell | 6-3,3-6,5-10 |
| ITF M25 Wetzlar | 2021/08/04 12:55 | Matthew Romios v Max Wiskandt | 6-4,6-3 |
| ITF M25 Marburg | 2021/07/06 16:15 | Max Wiskandt v Kyrian Jacquet | 6-2,6-4 |
| ITF M25 Alkmaar | 2021/06/20 11:00 | Marvin Moeller v Max Wiskandt | 7-6,6-3 |
| ITF M15 Heraklion | 2021/05/23 08:00 | Eleftherios Neos v Max Wiskandt | 3-6,2-6 |
| ITF M25 Koksijde | 2021/08/16 09:40 | Raphael Calzi v Olivier Rojas | 3-6,7-5,4-10 |
| ITF M25 Koksijde | 2021/08/15 08:00 | Charles Minc v Raphael Calzi | 6-3,2-6,0-10 |
| ITF M15 Frederiksberg | 2021/08/01 08:00 | Gianni Ross v Raphael Calzi | 7-5,6-4 |
| ITF M15 Esch/Alzette | 2021/07/20 12:55 | Guillaume Dermiens v Raphael Calzi | 1-6,6-4,6-4 |
| Davis Cup | 2021/06/19 09:35 | Egill Sigurdsson v Raphael Calzi | 4-6,0-6 |
| Davis Cup | 2021/06/17 09:05 | Raphael Calzi v Liam Delicata | 6-3,6-4 |
| ITF M15 Monastir | 2021/04/04 10:30 | Igor Marcondes v Raphael Calzi | 7-6,7-6 |
| ITF M15 Monastir | 2021/03/28 10:30 | Raphael Calzi v Youcef Rihane | 6-7,4-6 |