Gisela Riera Roura defeated Eva Bes Ostariz 6-4 7-6 in the Valladolid 25K round of 16 on hard. The upset overturned the form book — Eva Bes Ostariz came in leading the head-to-head 3–0. Gisela Riera Roura claimed a first win over Eva Bes Ostariz in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-08-28 | US Open | Q64 | hard | Eva Bes Ostariz | 7-6(8) 4-6 7-5 |
| 1999-03-15 | Reims 25K | R32 | clay | Eva Bes Ostariz | 6-1 6-3 |
| 1997-12-02 | Mallorca 10K | R16 | clay | Eva Bes Ostariz | 3-6 6-3 6-3 |