Eva Bes Ostariz defeated Gisela Riera Roura 7-6 4-6 7-5 in the US Open qualifying round of 64 on hard. The result followed the form book — Eva Bes Ostariz came in leading the head-to-head 2–1. Eva Bes Ostariz extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-03-15 | Reims 25K | R32 | clay | Eva Bes Ostariz | 6-1 6-3 |
| 1998-07-20 | Valladolid 25K | R16 | hard | Gisela Riera Roura | 6-4 7-6 |
| 1997-12-02 | Mallorca 10K | R16 | clay | Eva Bes Ostariz | 3-6 6-3 6-3 |