

Lukas Klein defeated Hugo Grenier 7-6 6-4 in the Troisdorf CH quarter-final on clay. The upset overturned the form book — Hugo Grenier came in ranked #255, leading the head-to-head 2–0. Lukas Klein claimed a first win over Hugo Grenier in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-02-10 | Marseille | Q2 | hard | Hugo Grenier | 2-6 7-6 7-5 |
| 2023-04-24 | Madrid Masters | Q1 | clay | Hugo Grenier | 6-7 6-3 6-4 |
Averages over each player's completed matches in the selected window (199 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Grenier H.: 3 days rest · 4 matches, 91 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About