Yann Marti defeated Jonas Schaer 6-2 6-3 in the M15 Bern 1 q32 on clay. The upset overturned the form book — Jonas Schaer came in leading the head-to-head 1–0. Yann Marti claimed a first win over Jonas Schaer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-03-14 | M25 Trimbach 1 | Q16 | carpet | Jonas Schaer | 7-5 3-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.