Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/09/15 09:30 | Martin Breysach v Amaury Raynel | 2-6,3-6 |
| ITF M15 Monastir | 2021/09/08 08:00 | Martin Breysach v Jeremy Beale | 4-6,2-6 |
| ITF M25 Bagneres-De-Bigorre | 2021/09/01 12:25 | Robin Bertrand v Martin Breysach | 6-3,6-2 |
| ITF M25 Bagneres-De-Bigorre | 2021/08/30 09:40 | Martin Breysach v Matt Ponchet | 6-0,6-1 |
| ITF M15 Castelo Branco | 2021/07/29 08:30 | Martin Breysach v Duarte Vale | 2-6,4-6 |
| ITF M15 Castelo Branco | 2021/07/27 12:10 | Naoki Tajima v Martin Breysach | 6-3,2-6,2-6 |
| ITF M25 Idanha-A-Nova | 2021/07/11 10:30 | Osgar O'Hoisin v Martin Breysach | 6-4,6-4 |
| ITF M15 Almada | 2021/07/07 08:30 | Martin Breysach v Harry Wendelken | 3-6,3-6 |
| ITF M15 Monastir | 2021/09/22 10:35 | Kazuma Kawachi v Wissam Abderrahman | 6-3,6-2 |
| ITF M15 Monastir | 2021/09/21 08:00 | Kazuma Kawachi v Nicolo Pozzani | 7-6,6-4 |
| ITF M15 Monastir | 2021/09/19 09:00 | Kazuma Kawachi v Egor Tsarapkin | 6-1,6-1 |
| ITF M15 Monastir | 2021/07/21 08:30 | Kazuma Kawachi v Gabriele Bosio | 4-6,0-6 |
| ITF M15 Monastir | 2021/07/19 14:00 | Kazuma Kawachi v Joshua Sheehy | 7-5,7-5 |
| ITF M15 Monastir | 2021/07/19 09:00 | Kazuma Kawachi v Amaan Siddiqui | 6-2,6-2 |
| ITF M15 Monastir | 2021/07/18 09:00 | Kazuma Kawachi v Tobias Kirchlechner | 6-3,7-6 |
| ITF M15 Monastir | 2021/07/16 08:30 | Jeremy Beale v Kazuma Kawachi | 6-4,6-3 |