Stijn Slump defeated Marlon Vankan 7-5 7-6 in the M15 Wels 1 semi-final on clay. Stijn Slump extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-04-03 | M25 Antalya 3 | R16 | clay | Stijn Slump | 6-2 6-3 |
| 2023-08-10 | M15 Eupen 1 | R16 | clay | Marlon Vankan | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.