Stadium: Center Court Round: 25 Ground: Clay
| Challenger Meerbusch | 2023/08/09 08:00 | Martin Krumich v Denis Yevseyev | 7-6,5-7,4-6 |
| Challenger Meerbusch | 2023/08/07 15:50 | Stefanos Sakellaridis v Martin Krumich | 3-6,5-7 |
| Challenger Meerbusch | 2023/08/06 13:10 | Martin Krumich v Hazem Naw | 6-4,6-2 |
| Challenger Liberec | 2023/07/30 11:40 | Martin Krumich v Federico Iannaccone | 6-7,3-6 |
| ITF M25 Telfs | 2023/07/19 12:30 | Tomas Lanik v Martin Krumich | 1-6,6-4,6-4 |
| ITF M25 Esch/Alzette | 2023/07/13 15:00 | Nikolas Sanchez Izquierdo v Martin Krumich | 6-3,7-6 |
| ITF M25 Esch/Alzette | 2023/07/12 08:00 | Martin Krumich v Florian Broska | 6-3,7-6 |
| ITF M25 Marburg | 2023/07/07 12:30 | Adrian Oetzbach v Martin Krumich | 6-3,6-4 |