Clarisa Fernandez defeated Vilmarie Castellvi 7-6 3-6 7-5 in the San Francisco CA 50K qualifying round on hard. The upset overturned the form book — Vilmarie Castellvi came in leading the head-to-head 1–0, but Clarisa Fernandez had been the form player, winning 7 of their last 10 on hard. Clarisa Fernandez claimed a first win over Vilmarie Castellvi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-03-21 | San Luis Potosi 1 25K | QF | clay | Vilmarie Castellvi | 1-6 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.