Stadium: Court 15 Round: 25 Ground: Hardcourt indoor
| Challenger - Cassis | 2021/09/05 14:00 | Jurgen Briand v Arthur Cazaux | 4-6,7-6,5-7 |
| Challenger - St. Tropez | 2021/08/31 12:05 | Jurgen Briand v Christopher O'Connell | 2-6,4-6 |
| Challenger - St. Tropez | 2021/08/30 09:00 | Maxime Hamou v Jurgen Briand | 2-6,1-6 |
| Challenger - St. Tropez | 2021/08/29 11:20 | Romain Gales v Jurgen Briand | 0-6,1-6 |
| ITF M25 - Uriage | 2021/07/14 15:50 | Oriol Roca Batalla v Jurgen Briand | 6-2,6-2 |
| ITF M25 - Ajaccio | 2021/07/08 07:00 | Mateus Alves v Jurgen Briand | 7-5,4-6,2-6 |
| ITF M25 - Ajaccio | 2021/07/06 07:00 | Arthur Bouquier v Jurgen Briand | 6-7,7-5,6-7 |
| ITF - M25 Bourg-en-Bresse | 2021/07/02 12:25 | Clement Tabur v Jurgen Briand | 6-4,6-3 |
| Challenger - Tulln | 2021/09/06 10:25 | Uladzimir Ignatik v Tobias Simon | 6-4,4-6,7-5 |
| Challenger - Tulln | 2021/09/05 13:00 | Rafael Matos v Tobias Simon | 6-7,2-6 |
| ITF M25 - Caslano | 2021/08/26 14:30 | Giovanni Oradini v Tobias Simon | 4-6,6-4,3-6 |
| ITF M25 - Caslano | 2021/08/25 13:10 | Stefano Baldoni v Tobias Simon | 6-7,1-6 |
| ITF M25 - Frankfurt am Main | 2021/08/10 13:55 | Tobias Simon v Christian Sigsgaard | 3-6,3-6 |
| ITF M25 - Bakio | 2021/06/29 13:00 | Pablo Llamas Ruiz v Tobias Simon | 7-5,6-2 |
| ITF M25 - Klosters | 2021/06/24 08:35 | Dominic Stephan Stricker v Tobias Simon | 7-6,6-7,6-3 |
| ITF M25 - Klosters | 2021/06/23 12:00 | Tomas Papik v Tobias Simon | 3-6,4-6 |