Stadium: Court 1 Round: 25 Ground: Carpet indoor
| ITF M15 Troisdorf | 2021/05/11 11:45 | Max Hans Rehberg v Lucas Gerch | 0-6,6-4,0-6 |
| ATP Munich | 2021/04/24 10:25 | Ricardas Berankis v Max Hans Rehberg | 1-6,6-3,6-4 |
| ITF M25 Meerbusch | 2021/04/13 15:55 | Max Hans Rehberg v Michael Vrbensky | 6-7,6-4,1-6 |
| German Championship | 2020/12/08 16:40 | Max Hans Rehberg v Jordi Walder | 6-7,4-5 |
| Challenger Eckental | 2020/11/04 10:20 | Evgeny Donskoy v Max Hans Rehberg | 3-6,6-3,7-6 |
| Challenger Ismaning | 2020/10/20 14:00 | Lukas Lacko v Max Hans Rehberg | 5-7,7-6,6-1 |
| DTB German Pro Series | 2020/06/26 12:00 | Max Hans Rehberg v Johannes Haerteis | 3-6,2-6 |
| DTB German Pro Series | 2020/06/25 12:00 | Cedrik-Marcel Stebe v Max Hans Rehberg | 6-1,6-3 |
| 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 |