Adam Moundir defeated Peter Heller 6-7 6-2 6-4 in the M15 Metzingen 1 round of 32 on clay. The upset overturned the form book — Peter Heller came in leading the head-to-head 1–0. Adam Moundir claimed a first win over Peter Heller in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-03-29 | M15 Antalya 9 | R32 | clay | Peter Heller | 3-6 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.