Stadium: Cancha 2 Round: 25 Ground: Clay
| Challenger Palmas del Mar | 2023/06/18 02:10 | Kei Nishikori v Gustavo Heide | 6-4,6-2 |
| Challenger Palmas del Mar | 2023/06/16 20:55 | Bernard Tomic v Gustavo Heide | 6-7,7-6,1-6 |
| Challenger Palmas del Mar | 2023/06/15 16:00 | Gustavo Heide v Alex Rybakov | 6-3,6-4 |
| Challenger Palmas del Mar | 2023/06/13 23:10 | Gustavo Heide v Tristan Schoolkate | 7-6,6-3 |
| Challenger Palmas del Mar | 2023/06/12 15:00 | Marius Copil v Gustavo Heide | 3-6,4-6 |
| Challenger Palmas del Mar | 2023/06/11 17:15 | Ji Sung Nam v Gustavo Heide | 4-6,4-6 |
| Challenger Tyler | 2023/06/06 16:35 | Gustavo Heide v Alexis Galarneau | 4-6,2-6 |
| Challenger Tyler | 2023/06/05 19:50 | Gustavo Heide v Ernesto Escobedo | 7-5,3-6,7-6 |
| ATP Stuttgart | 2023/06/10 09:00 | Max Hans Rehberg v Altug Celikbilek | 1-6,4-6 |
| Challenger Heilbronn | 2023/06/05 09:30 | Timo Stodder v Max Hans Rehberg | 3-6,4-6 |
| Challenger Heilbronn | 2023/06/04 09:30 | Hendrik Jebens v Max Hans Rehberg | 6-7,6-7 |
| Challenger Troisdorf | 2023/05/28 14:30 | Max Hans Rehberg v Louis Wessels | 6-7,6-4,3-6 |
| ITF - Warmbad-Villach M15 | 2023/05/25 13:30 | Luca Wiedenmann v Max Hans Rehberg | 7-5,6-3 |
| ITF - Warmbad-Villach M15 | 2023/05/25 09:10 | Federico Marchetti v Max Hans Rehberg | 0-6,3-6 |
| ITF - Warmbad-Villach M15 | 2023/05/23 11:55 | Benedikt Emesz v Max Hans Rehberg | 6-4,1-6,3-6 |
| ITF - Praga M25 | 2023/05/17 08:00 | Jakob Schnaitter v Max Hans Rehberg | 2-6,6-3,6-2 |