Estádio: B&B Court Round: 19 Ground: Clay
| Challenger - Troisdorf | 2023/05/28 10:05 | Sumit Nagal v Sergey Fomin | 6-1,6-1 |
| Challenger - Escópia | 2023/05/25 08:00 | Mate Valkusz v Sumit Nagal | 7-5,0-6,6-2 |
| Challenger - Escópia | 2023/05/23 11:00 | Sumit Nagal v Benjamin Hassan | 6-1,6-3 |
| Challenger - Escópia | 2023/05/22 09:00 | Sumit Nagal v Bogdan Bobrov | 6-0,6-2 |
| Challenger - Escópia | 2023/05/21 10:40 | Sumit Nagal v Ramkumar Ramanathan | 6-3,6-3 |
| Challenger - Mauthausen | 2023/05/08 10:05 | Mirza Basic v Sumit Nagal | 4-6,6-1,6-2 |
| Challenger - Mauthausen | 2023/05/07 12:35 | Mats Moraing v Sumit Nagal | 0-6,6-4,4-6 |
| Challenger - Roma | 2023/04/30 09:30 | Sumit Nagal v Jesper De Jong | 6-3,6-2 |
| Challenger - Troisdorf | 2023/05/28 08:30 | Robert Strombachs v Maxime Janvier | 6-3,6-4 |
| ITF - M25 Most | 2023/05/25 13:25 | Robert Strombachs v Emilien Voisin | 6-7,6-7 |
| ITF - M25 Most | 2023/05/23 09:55 | Robert Strombachs v Hazem Naw | 6-3,4-6,6-4 |
| ITF - M25 Nottingham | 2023/05/04 09:00 | Yusuke Takahashi v Robert Strombachs | 6-2,6-1 |
| ITF - M25 Nottingham | 2023/05/03 12:40 | Freddy Blaydes v Robert Strombachs | 1-6,2-6 |
| ITF - M25 Sanxenxo | 2023/04/30 09:00 | Robert Strombachs v Rigele Te | 6-7,6-3,6-7 |
| ITF - M25 Sanxenxo | 2023/04/29 13:45 | Diego F Flores v Robert Strombachs | 6-7,5-7 |
| ITF - M25 Sanxenxo | 2023/04/28 13:00 | Robert Strombachs v Johannes Haerteis | 7-6,6-4 |