J. Kupcic defeated Peter Heller 6-3 6-4 in the M15 Bad Waltersdorf 1 round of 32 on clay. The upset overturned the form book — Peter Heller came in leading the head-to-head 1–0. J. Kupcic claimed a first win over Peter Heller in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-07-11 | M15 Litija 1 | R16 | clay | Peter Heller | 6-4 6-7(6) 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.