Zsofia Gubacsi defeated Klara Koukalova 5-7 7-5 6-1 in the Acapulco round of 32 on hard. The upset overturned the form book — Klara Koukalova came in leading the head-to-head 2–0, defending last year's round of 16. Zsofia Gubacsi claimed a first win over Klara Koukalova in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-02-27 | Acapulco | R32 | hard | Klara Koukalova | 6-3 6-3 |
| 2003-04-14 | Budapest | R32 | clay | Klara Koukalova | 6-2 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About
Averages over each player's completed matches in the selected window (1 vs 76). ATP, WTA & Challenger.