Boris Fassbender defeated Raphael Calzi 4-6 7-6 6-3 in the M25 Esch/Alzette 2 round of 32 on clay. The result followed the form book — Boris Fassbender came in leading the head-to-head 1–0. Boris Fassbender extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-09-27 | M15 Forbach 1 | R32 | carpet | Boris Fassbender | 6-4 6-3 |