Daniel De Jonge defeated Guy Den Heijer 6-2 6-3 in the M15 Eupen 1 round of 32 on clay. The result followed the form book — Daniel De Jonge came in leading the head-to-head 1–0. Daniel De Jonge extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-07-31 | M15 Eindhoven 1 | Q16 | clay | Daniel De Jonge | 7-6(4) 5-7 13-11 |