S. Klaassen defeated Fons Van Sambeek 7-6 6-3 in the M15 Eindhoven 1 round of 32 on clay. The upset overturned the form book — Fons Van Sambeek came in ranked #1026, leading the head-to-head 1–0. S. Klaassen claimed a first win over Fons Van Sambeek in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-07-01 | M15 Amstelveen 1 | Q32 | clay | Fons Van Sambeek | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.