Deney Wassermann defeated Sander Jong 6-3 7-6 in the M25 The Hague 1 quarter-final on clay. The upset overturned the form book — Sander Jong came in ranked #688, leading the head-to-head 1–0. Deney Wassermann claimed a first win over Sander Jong in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-09-06 | M15 Haren | F | clay | Sander Jong | 4-6 1-6 |
Averages over each player's completed matches in the selected window (101 vs 93). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About