Klara Koukalova defeated Vania King 6-2 4-6 6-1 in the Seoul quarter-final on hard. The upset overturned the form book — Vania King came in leading the head-to-head 3–0, defending last year's round of 16. Klara Koukalova claimed a first win over Vania King in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-03-02 | Monterrey | R32 | hard | Vania King | 6-1 6-4 |
| 2006-03-06 | Indian Wells | R64 | hard | Vania King | 6-3 6-3 |
| 2005-08-29 | US Open | R128 | hard | Vania King | 6-3 3-6 6-1 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (76 vs 151). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About