Zuzana Zlochova defeated Ana Clara Duarte 6-1 6-1 in the Poza Rica 25K q16 on hard. The upset overturned the form book — Ana Clara Duarte came in leading the head-to-head 1–0. Zuzana Zlochova claimed a first win over Ana Clara Duarte in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-20 | Buenos Aires 10K | R16 | clay | Ana Clara Duarte | 6-0 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.