Stadium: Court 1 Round: 27 Ground: Hardcourt outdoor
| ITF M25 Setubal | 2021/10/07 11:40 | Pedro Araujo v Arthur Cazaux | 6-7,6-4,1-6 |
| ITF M25 Setubal | 2021/10/06 15:05 | Luis Faria v Arthur Cazaux | 5-7,3-6 |
| ITF M25 Setubal | 2021/10/05 10:00 | Arthur Cazaux v Alex Knaff | 6-1,6-7,10-5 |
| ITF M25 Setubal | 2021/10/04 10:00 | Arthur Cazaux v Eduardo Morais | 6-0,6-2 |
| Challenger Cassis | 2021/09/07 13:45 | Clement Chidekh v Arthur Cazaux | 6-4,6-4 |
| Challenger Cassis | 2021/09/06 10:00 | Ramkumar Ramanathan v Arthur Cazaux | 6-4,6-2 |
| Challenger Cassis | 2021/09/05 14:00 | Jurgen Briand v Arthur Cazaux | 4-6,7-6,5-7 |
| Challenger St. Tropez | 2021/09/01 14:00 | Arthur Cazaux v Alexandre Muller | 2-6,3-6 |
| ITF M25 Setubal | 2021/10/07 10:30 | Illia Stoliar v Sebastian Fanselow | 1-6,0-6 |
| ITF M25 Setubal | 2021/10/06 10:00 | Jumpei Yamasaki v Sebastian Fanselow | 6-4,4-6,4-6 |
| Challenger Lisbon | 2021/09/28 09:00 | Sebastian Fanselow v Nikola Milojevic | 4-6,4-6 |
| Challenger Lisbon | 2021/09/27 09:00 | Jacopo Berrettini v Sebastian Fanselow | 6-4,5-7,2-6 |
| Challenger Lisbon | 2021/09/26 09:00 | Marco Bortolotti v Sebastian Fanselow | 2-6,2-6 |
| Challenger Braga | 2021/09/20 09:00 | Nikolas Sanchez Izquierdo v Sebastian Fanselow | 6-4,1-6,6-3 |
| Challenger Braga | 2021/09/19 10:25 | Jaime Faria v Sebastian Fanselow | 0-6,2-6 |
| ITF M25 Sintra | 2021/09/15 15:35 | Adria Soriano Barrera v Sebastian Fanselow | 6-4,6-4 |