Gisela Riera Roura defeated Patricia Aznar 7-5 7-6 in the Getxo 25K round of 32 on clay. The upset overturned the form book — Patricia Aznar came in leading the head-to-head 1–0. Gisela Riera Roura claimed a first win over Patricia Aznar in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-05-20 | Zaragoza 10K | R32 | clay | Patricia Aznar | 6-4 6-0 |