Clarisa Fernandez defeated Olga Vymetalkova 6-2 6-3 in the San Francisco CA 50K round of 32 on hard. The upset overturned the form book — Olga Vymetalkova came in leading the head-to-head 1–0, but Clarisa Fernandez had been the form player, winning 3 of their last 4 on hard. Clarisa Fernandez claimed a first win over Olga Vymetalkova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-09-27 | Fiumicino 10K | QF | clay | Olga Vymetalkova | 6-7 6-1 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.