
Quentin Halys defeated Tallon Griekspoor 6-4 3-6 7-6 in the Istanbul CH quarter-final on hard. The upset overturned the form book — Tallon Griekspoor came in ranked #57, leading the head-to-head 2–0. Quentin Halys claimed a first win over Tallon Griekspoor in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-02-09 | Rotterdam | R16 | hard | Tallon Griekspoor | 7-5 7-6(11) |
| 2023-02-20 | Doha | R32 | hard | Tallon Griekspoor | 7-6(4) 4-6 7-6(5) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About
Averages over each player's completed matches in the selected window (200 vs 198). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Halys Q.: 12 days rest · 2 matches (14d) · Griekspoor T.: 14 days rest · 1 match (14d). Higher means fresher. About