Mert Aytekin defeated A. Funk 6-0 3-6 10-6 in the M15 Monastir 47 q16 on hard. The upset overturned the form book — A. Funk came in leading the head-to-head 1–0. Mert Aytekin claimed a first win over A. Funk in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-04-21 | M15 Antalya 12 | Q32 | clay | A. Funk | 6-2 6-2 |