Laura Siegemund defeated Klara Koukalova 7-5 6-4 in the Biarritz $100K semi-final on clay. The upset overturned the form book — Klara Koukalova came in leading the head-to-head 1–0. Laura Siegemund claimed a first win over Klara Koukalova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-26 | US Open | Q128 | hard | Klara Koukalova | 6-3 6-4 |
Averages over each player's completed matches in the selected window (200 vs 51). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). 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