Stadium: Court 1 Round: 54 Ground: Clay
| ITF M25 Koksijde | 2021/08/15 10:15 | Jakub Wojcik v Alex Knaff | 6-3,4-6,10-8 |
| ITF M15 Novi Sad | 2021/08/03 08:00 | Alex Knaff v Roko Horvat | 4-6,6-1,6-10 |
| ITF M15 Novi Sad | 2021/08/02 12:30 | Alen Rogic-Hadzalic v Alex Knaff | 2-6,1-6 |
| ITF M15 Novi Sad | 2021/08/01 14:00 | Alex Knaff v Admir Kalender | 7-5,6-4 |
| ITF M15 Novi Sad | 2021/07/27 09:05 | Alex Knaff v Bekkhan Atlangeriev | 4-6,2-6 |
| ITF M15 Novi Sad | 2021/07/26 12:00 | Alex Knaff v Tomislav Jotovski | 5-7,6-2,11-9 |
| ITF M15 Novi Sad | 2021/07/25 10:45 | Luka Pavlovic v Alex Knaff | 6-7,7-5,13-15 |
| ITF M15 Esch/Alzette | 2021/07/20 15:45 | Marlon Vankan v Alex Knaff | 6-4,6-4 |
| ITF M25 Muttenz | 2021/08/18 13:10 | Harold Mayot v Jeremy Schifris | 6-1,6-4 |
| ITF M25 Muttenz | 2021/08/17 11:20 | Nico Jaeger v Jeremy Schifris | 3-6,3-6 |
| ITF M25 Muttenz | 2021/08/16 14:50 | Tanguy Genier v Jeremy Schifris | 3-6,2-6 |
| ITF M25 Telfs | 2021/07/11 09:00 | Leon Hoeveler v Jeremy Schifris | 1-6,6-0,10-6 |
| ITF M25 Wroclaw | 2021/06/27 15:30 | Jeremy Schifris v Maciej Rajski | 1-6,2-6 |
| ITF M15 Heraklion | 2021/05/30 09:00 | Jeremy Schifris v Yasha Zemel | 6-4,2-6,8-10 |
| ITF M15 Heraklion | 2021/05/25 08:00 | Daniel Cox v Jeremy Schifris | 6-3,6-1 |
| ITF M15 Heraklion | 2021/05/24 08:00 | Jeremy Schifris v Pol Wattanakul | 6-1,6-7,10-4 |