Polona Hercog defeated Rossana De Los Rios 6-4 6-1 in the Acapulco round of 32 on hard. The upset overturned the form book — Rossana De Los Rios came in leading the head-to-head 1–0, defending last year's round of 32. Polona Hercog claimed a first win over Rossana De Los Rios in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-02-09 | Cali 50K | SF | clay | Rossana De Los Rios | 6-4 6-3 |
Averages over each player's completed matches in the selected window (200 vs 12). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About