Frederica Piedade defeated Mary Gambale 6-4 6-1 in the Mexico City 25K semi-final on hard. The upset overturned the form book — Mary Gambale came in leading the head-to-head 1–0. Frederica Piedade claimed a first win over Mary Gambale in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-11-15 | Puebla 25K | QF | hard | Mary Gambale | 6-2 3-6 7-6(5) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.