Mariana Diaz Oliva defeated Melinda Czink 7-5 5-7 6-3 in the Acapulco round of 32 on hard. The upset overturned the form book — Melinda Czink came in leading the head-to-head 3–1, but Mariana Diaz Oliva had been the form player, winning 4 of their last 8 on hard. Mariana Diaz Oliva narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-11-22 | San Luis Potosi 25K | F | hard | Melinda Czink | 6-0 5-7 6-3 |
| 2004-05-31 | Prostejov 75K | R16 | clay | Mariana Diaz Oliva | 7-5 6-1 |
| 2003-11-17 | Puebla 25K | SF | hard | Melinda Czink | 6-3 6-1 |
| 2002-09-30 | Girona 50K | R32 | clay | Melinda Czink | 7-6(3) 6-3 |
Averages over each player's completed matches in the selected window (22 vs 149). 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