Gisela Riera Roura defeated Mariam Ramon Climent 7-6 6-0 in the Sao Paulo round of 16 on hard. The upset overturned the form book — Mariam Ramon Climent came in leading the head-to-head 1–0. Gisela Riera Roura claimed a first win over Mariam Ramon Climent in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-04-26 | Espinho 25K | SF | clay | Mariam Ramon Climent | 6-4 6-4 |