Raffael Schaer defeated M. Chambonniere 5-7 6-1 10-2 in the M15 Monastir 40 q64 on hard. The upset overturned the form book — M. Chambonniere came in leading the head-to-head 1–0. Raffael Schaer claimed a first win over M. Chambonniere in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-06-15 | M15 Casablanca 1 | Q32 | clay | M. Chambonniere | 6-2 6-4 |