Jan Lennard Struff defeated Aslan Karatsev 4-6 6-3 6-4 in the Madrid Masters semi-final on clay. The upset overturned the form book — Aslan Karatsev came in leading the head-to-head 1–0, defending last year's round of 64. Jan Lennard Struff claimed a first win over Aslan Karatsev in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-04-24 | Madrid Masters | Q2 | clay | Aslan Karatsev | 6-4 6-2 |
Averages over each player's completed matches in the selected window (195 vs 107). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Lennard Struff J.: 3 days rest · 2 matches, 49 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