

Lukas Klein defeated Jiri Lehecka 6-3 6-4 in the Prostejov CH quarter-final on clay. The upset overturned the form book — Jiri Lehecka came in ranked #14. Lukas Klein extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-11-04 | Belgrade | QF | hard | Jiri Lehecka | 3-6 7-6 6-3 |
| 2020-02-27 | M15 Trnava 1 | R16 | hard | Lukas Klein | 4-6 6-2 6-3 |
Averages over each player's completed matches in the selected window (175 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Lehecka J.: 2 days rest · 2 matches, 61 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
Per-surface Serve / Return Rating (0–100, percentile within the clay field, opponent-adjusted over 52 weeks). About